Development:Pokémon Gold and Silver/Items

This is a sub-page of Development:Pokémon Gold and Silver.

Overview

The data that follows is pulled from the files listed below:

	Contents	Filepath
1999/04/28	Item Data & Descriptions	Pokemon\wk\setup\mons2_org\SOURCE\DATA\ITEMTBL.NEW (Data only)	KR
1999/07/17		Pokemon\wk\setup\mons2_org\SOURCE\DATA\BACKUP\ITEMTBL.DAT (Data only)	KR
		Pokemon\wk\setup\mons2_org\SOURCE\DATA\BACKUP\ITEM_GUI.DAT (Descriptions only)	KR
1999/08/04		Document\ダケモン金銀\資料old\ＰＭ２ item ver5.4.xls	JP
1999/08/17		Spaceworld 1999 Demo.	JP
1999/08/18		Document\ダケモン金銀\資料old\data2\ＰＭ２ item ver5.8.xls	JP
1999/08/23		Document\ダケモン金銀\資料old\data3\ＰＭ２ item ver5.9.xls	JP
1999/08/25		Document\ダケモン金銀\資料old\あつしゅくー\ＰＭ２ item ver6.0.xls	JP
1999/09/30		Document\ダケモン金銀\資料old\pm2data09022\ＰＭ２ item ver6.6.xls	JP
1999/07/23	Battle Effects Code	Pokemon\wk\setup\mons2_org\SOURCE\BACKUP\KOUGEKI.DMG	KR
1999/11/25		Pokemon\wk\setup\mons2_org\SOURCE\KOUGEKI.DMG	KR
1999/07/28	Main Battle Code	Pokemon\wk\setup\mons2_org\SOURCE\FIGHT.CPY	KR
1999/08/20		Pokemon\wk\setup\mons2_org\SOURCE\BACKUP\FIGHT.BAK	KR
1999/09/06		Pokemon\wk\setup\mons2_org\SOURCE\FIGHT.BAK	KR
1999/10/12		Pokemon\wk\setup\mons2_org\SOURCE\FIGHT.DMG	KR

Item Groups

The various iterations of the games' item selection. Any items not listed in the table below are identical between sets.

Legend

• Italics: Different name but same purpose.
• Gray: The item is null.
• Blue: Name carried over from the Spaceworld 1997 demo. Item has no data.

ID	Group 1 1999/04/28	Group 2 1999/07/17	Group 3 1999/08/04	Group 4 1999/08/17	Group 5 1999/08/18	Group 6 1999/08/23	Group 7 1999/09/30
003 0x03	未定 Pending	カビチュウ Teru-Sama	いのちのみ Life Berry				ひかりのこな Brightpowder
006 0x06	タウンマップ Town Map						カビチュウ Teru-Sama
025 0x19	未定 Pending	カビチュウ Teru-Sama	たべのこし Leftovers	カビチュウ Teru-Sama
030 0x1E	未定 Pending	カビチュウ Teru-Sama	ラッキーパンチ Lucky Punch
035 0x23	未定 Pending	カビチュウ Teru-Sama	メタルパウダー Metal Powder
045 0x2D	未定 Pending	カビチュウ Teru-Sama	にがいきのみ Bitter Berry	カビチュウ Teru-Sama
050 0x32	未定 Pending	カビチュウ Teru-Sama	おうごんのみ Gold Berry	カビチュウ Teru-Sama
056 0x38	ポケモンのふえ Poké Flute						カビチュウ Teru-Sama
060 0x3C	未定 Pending	カビチュウ Teru-Sama	ぎんのはっぱ Silver Leaf
069 0x45	ウツギのタマゴ Elm's Egg	ふしぎなタマゴ Mystery Egg
070 0x46	おとどけもの Oak's Parcel						カビチュウ Teru-Sama
072 0x48	ミルク Milk	モーモーミルク Moomoo Milk
073 0x49	しんぴのいと Mystic Thread	せんせいのツメ Quick Claw
074 0x4A	みえないハリ Hidden Needle	どくけしのみ PSNCureBerry
075 0x4B	未定 Pending	カビチュウ Teru-Sama	きんのはっぱ Gold Leaf
076 0x4C	しんぴのハリ Mystic Needle	やわらかいすな Soft Sand
077 0x4D	しろいハネ White Feather			するどいくちばし Sharp Beak
078 0x4E	とがったまえば Sharp Fang	マヒなおしのみ PRZCureBerry	まひなおしのみ PRZCureBerry
079 0x4F	ヘビのぬけがら Snakeskin	やけたきのみ Burnt Berry
080 0x50	でんきぶくろ Electric Pouch	こおったきのみ Ice Berry
083 0x53	ふしぎなちから Strange Power	にがいきのみ Bitter Berry
084 0x54	いのちのおふだ Life Tag	はっかのみ Mint Berry
085 0x55	コウモリのハネ Bat Wing	あかぼんぐり Red Apricorn
086 0x56	キノコ Mushroom			ちいさなキノコ Tinymushroom
087 0x57	まっかなキノコ Deep Red Mushroom			おおきなキノコ Big Mushroom
089 0x59	おとしあな Pitfall	あおぼんぐり Blu Apricorn
090 0x5A	未定 Pending	カビチュウ Teru-Sama	おうごんのみ Gold Berry	カビチュウ Teru-Sama
092 0x5C	ずつうのたね Migraine Seed	きぼんぐり Ylw Apricorn
093 0x5D	はんげきのうでわ Counter Cuff	みどぼんぐり Grn Apricorn
096 0x60	スプーン Spoon	しろぼんぐり Wht Apricorn					まがったスプーン Twistedspoon
097 0x61	まがったスプーン Twistedspoon						しろぼんぐり Wht Apricorn
099 0x63	いしころ Pebble	くろぼんぐり Blk Apricorn
100 0x64	未定 Pending	カビチュウ Teru-Sama	きのみ Berry	カビチュウ Teru-Sama
101 0x65	おおきないし Big Stone	ももぼんぐり Pnk Apricorn
104 0x68	おおきなじしゃく Big Magnet	ピンクのリボン Pink Bow
106 0x6A	にげあしのハネ Flee Feather	けむりだま Smoke Ball
108 0x6C	ちぎれたくびわ Torn Collar	じしゃく Magnet
109 0x6D	つぶれたタイヤ Crushed Tire	きせきのみ MiracleBerry
112 0x70	おふだ Tag	かわらずのいし Everstone
114 0x72	５えんだま 5 Yen Coin	カビチュウ Teru-Sama		いかりまんじゅう RageCandyBar
115 0x73	カニバサミ Crab Scissors	カビチュウ Teru-Sama
116 0x74	はれつだま Burst Orb	カビチュウ Teru-Sama
120 0x78	未定 Pending	カビチュウ Teru-Sama	きのみ Berry	カビチュウ Teru-Sama
121 0x79	みきりだま Detect Orb	ちからのこな Energypowder
122 0x7A	ながいした Long Tongue	ちからのねっこ Energy Root
123 0x7B	きたないベル Dirty Bell	ばんのうごな Heal Powder
124 0x7C	われたナベ Broken Pan	ふっかつそう Revival Herb
125 0x7D	かたいすな Hard Sand	かたいいし Hard Stone
127 0x7F	ながいツタ Long Vine	カードキー Card Key
128 0x80	ははのあい Mom's Love	きかいのぶひん Machine Part
129 0x81	えんまく Smokescreen	おとなのあかし Proof of Adulthood				カビチュウ Teru-Sama
130 0x82	アクアホーン Aqua Horn	おとしもの Lost Item
131 0x83	あかいいし Red Stone			ほしのすな Stardust
132 0x84	あかいほうせき Red Gem			ほしのかけら Star Piece
133 0x85	みえないカベ Invisible Wall	ちかのカギ Basement Key
134 0x86	するどいカマ Sharp Scythe	ていきけん Pass
135 0x87	未定 Pending	カビチュウ Teru-Sama	きのみ Berry	カビチュウ Teru-Sama
136 0x88	こおりのビキニ Ice Bikini	カビチュウ Teru-Sama
137 0x89	いかずちのキバ Thunder Fang	カビチュウ Teru-Sama
138 0x8A	せいなるほのお Sacred Fire	もくたん Charcoal
139 0x8B	するどいツノ Sharp Horn	カビチュウ Teru-Sama		きのみジュース Berry Juice
140 0x8C	ちっちゃなウロコ Tiny Scales	カビチュウ Teru-Sama				ピントレンズ Scope Lens
141 0x8D	はがねのウロコ Steel Scales	カビチュウ Teru-Sama
142 0x8E	しんぴのこうら Mystic Shell	カビチュウ Teru-Sama
144 0x90	きれいなシッポ Pretty Tail	りゅうのキバ Dragon Fang
145 0x91	みずのシッポ Water Tail	カビチュウ Teru-Sama
147 0x93	こおりのつばさ Ice Wing	カビチュウ Teru-Sama
148 0x94	かみなりのつばさ Thunder Wing	カビチュウ Teru-Sama
149 0x95	ほのおのつばさ Fire Wing	カビチュウ Teru-Sama
150 0x96	未定 Pending	カビチュウ Teru-Sama	ふしぎなきのみ MysteryBerry
153 0x99	げんしのちから Ancient Power	カビチュウ Teru-Sama
154 0x9A	ほのおのシッポ Fire Tail	カビチュウ Teru-Sama
155 0x9B	ほのおのシッポ Thunder Tail	カビチュウ Teru-Sama
157 0x9D	ハードボール Hard Ball	ヘビーボール Heavy Ball
158 0x9E	メール Mail			はながらメール Flower Mail
159 0x9F	ダイレクトボール Direct Ball	レベルボール Level Ball
160 0xA0	アクアボール Aqua Ball	ルアーボール Lure Ball
161 0xA1	ナイトボール Night Ball	スピードボール Fast Ball
162 0xA2	どくのいし Poison Stone	カビチュウ Teru-Sama
167 0xA7	ポケスタ２アイテム Stadium 2 item	きのはこ Normal Box
168 0xA8	ポケスタ２アイテム Stadium 2 item	きりのはこ Gorgeous Box
169 0xA9	太陽の石 Sun Stone	たいようのいし Sun Stone
170 0xAA	未定 Pending	カビチュウ Teru-Sama	みずたまリボン Polkadot Bow
171 0xAB	こちょこちょぼう Tickle Stick					カビチュウ Teru-Sama
174 0xAE	リンゴ Apple	おうごんのみ Gold Berry
175 0xAF	シルフスコープ２ Silph Scope 2	ゼニガメじょうろ Squirt Bottle
176 0xB0	ひきかえけん Voucher					カビチュウ Teru-Sama
177 0xB1		パークボール Park Ball
178 0xB2		にじいろのはね Rainbow Wing
179 0xB3		みつのつぼ Honey Pot	ミツのつぼ Honey Pot			カビチュウ Teru-Sama
180 0xB4	未定 Pending	カビチュウ Teru-Sama	かわらのかけら Brick Piece
181 0xB5		メール Mail		ラプラスメール Lapras Mail	なみのりメール Surf Mail
182 0xB6		メール Mail			みずいろメール Litebluemail
183 0xB7		メール Mail			にがおえメール Portraitmail
184 0xB8		メール Mail			ラブリーメール Lovely Mail
185 0xB9		メール Mail			ブイブイメール Eon Mail
186 0xBA		メール Mail			へんしんメール Morph Mail
187 0xBB		メール Mail			けいたいメール Mobile Mail	あおぞらメール Bluesky Mail
188 0xBC		メール Mail			おんぷメール Music Mail
189 0xBD		メール Mail			まぼろしメール Mirage Mail
190 0xBE	未定 Pending	カビチュウ Teru-Sama	きのみ Berry	カビチュウ Teru-Sama
195 0xC3	未定 Pending	カビチュウ Teru-Sama	きのみ Berry	カビチュウ Teru-Sama
220 0xDC	未定 Pending	カビチュウ Teru-Sama	きのみ Berry	カビチュウ Teru-Sama
250 0xFA		カビチュウ Teru-Sama	未定 Pending	カビチュウ Teru-Sama
255 0xFF	未定 Pending	カビチュウ Teru-Sama	きのみ Berry	カビチュウ Teru-Sama

Removed Items

Cut After Group 1

Spaceworld 1997 Items
These are in the same slots and have the same names as items from the Spaceworld 1997 demo. These items exist in name only, with placeholder attributes and null effects. A few did, however, receive slightly different names:

ID	1997 Name	1999 Name
074 0x4A	せんせいのハり Quick Needle	みえないハリ Hidden Needle
116 0x74	しげきだま Stimulus Orb	はれつだま Burst Orb
130 0x82	しめったツノ Wet Horn	アクアホーン Aqua Horn
139 0x82	2ほんのツノ Twin Horns	するどいツノ Sharp Horn

Detect Orb & Poison Stone
These two items from Spaceworld 1997 initially made the cut before getting removed by the next group. The Detect Orb raises the player's evasion as expected with item effect 25, which otherwise goes completely unused. The Poison Stone has the same usage flag as the other evolutionary stones, but no Pokémon have it listed as an evolution method.

Valuable Item Groups
There are at least twelve items which appear to form valuable item pairs, much like the Tinymushroom/Big Mushroom and Stardust/Star Piece pairs in the final games. They're listed below along with the Pokémon families that might have been meant to carry them:

• The Mystic Thread and Mystic Needle for the Norowara line.
• The Spoon and Twistedspoon for the Abra line.
• The Pebble and Big Stone for the Geodude line.
• The Torn Collar and Crushed Tire for the Houndour line.
• The Dirty Bell and Broken Pan for an unknown line.
• The Tiny Scales and Steel Scales for the Onix line.

Cut After Group 3

Pokémon brought over from a Generation I game via the Time Capsule will have a held item attached, and that ID of that item is equal to the Pokémon's catch rate. This feature had been planned since at least Spaceworld 1997. The slots for catch rate items are marked しようきんし, or Don't Use. Group 3 is the first to put something in those slots, with items like Leftovers, Lucky Punch, and Metal Powder. What's strange here is the seven duplicates of Berry, along with two duplicates of Gold Berry and one of Bitter Berry.

These are very likely oversights, as it's not hard to imagine the problems that would arise if this were actually implemented, like the Berries being unable to stack with each other, clogging up inventory space. Thankfully, someone on the development team realized how bad of an idea this was, deleted the Berry duplicates, and implemented a simple lookup table instead.

Cut After Group 5

Tickle Stick & Voucher

Item	Description	Translation
Tickle Stick	せなかを　こちょこちょ　すると とっても　きもちが　いい	It feels great to have your back tickled.
Voucher	ラジオカードの　ひきかえけん	Radio Card voucher.

Two new key items that were both cut sometime between August 18th and August 23rd; it doesn't seem like either of them was ever placed or implemented in the game.

• The description of the Tickle Stick mentions that it feels good when you use it on a person's back. The player had to rub the S.S. Anne's captain's back in Generation I, so this might have been meant for a similar event on the S.S. Aqua.
• The Voucher would have been an extra step to get the Radio Card in Goldenrod City. In the final games, the player gets the Radio Card straight away after completing a quiz in the Goldenrod Radio Tower.

(Translation: Rangi)

Honey Pot

Date	Description	Translation
1999/07/17	あまーい　みつを　ためる　つぼ みつの　においが　しみついている	A pot for storing SWEET HONEY. It has an ingrained honey scent.
1999/08/04	あまーい　ミツを　ためる　つぼ ミツの　においが　しみついている	A pot for storing SWEET HONEY. It has an ingrained honey scent.

According to p20430.txt, the Honey Pot and Sweet Honey were first implemented on or before April 30th. Commented-out code in SOURCE\ITEMBOX.DMG gives a complete rundown on how this item would work:

Context	Description	Translation
Use (Success)	<PLAYER>は　ミツを きのみきに　ぬった！	<PLAYER> spread honey on the tree!
Use (Failure)	ミツを　きに　ぬろうとした...... しかし　つぼの　なかは からっぽ　だった！	Tried to spread honey... But the pot was empty!

• The code that handles using the item is found in the subroutine "HoneyPot". The player would be able to use this item on a single Headbutt tree; there are different messages depending on whether the player actually has any Sweet Honey in the Honey Pot.

Context	Description	Translation
Tree (Same Day)	ここには　きょう　ミツ ぬったぞ！	You spread honey here today!
Tree (Next Day)	このきには　きのう　ミツ ぬったぞ！	You spread honey here yesterday!

• The subroutine "HoneyTreeCheck" would give the player a message when they inspected the honey-smeared tree, with the message changing depending on when the player poured the honey.

• "ShakeEncRateCheck" would check whether a day had passed since the player applied honey to the tree. If true, that tree would have encounters 100% of the time and would always use the rare encounter table, regardless of the tree's X/Y position. After another day, the tree would return back to normal.

According to the item XLS sheets, the Honey Pot would have been found in the Goldenrod Department Store basement, and according to text found in the final Gold and Silver ROMs, the woman that gives the TM for Sweet Scent originally gave out Sweet Honey. By August 5th (file p20805.txt), all data related to Sweet Honey had been dummied out. Nevertheless, the Honey Pot item managed to stick around for a bit longer until it was finally deleted sometime between August 18th and August 23rd. Trying to use it in the Spaceworld 1999 demo gives Oak's standard "can't use this" error message.

(Translation: Rangi)

Proof of Adulthood

Description	Translation
もっている　だけで おとなっぽく　みえる	Just holding it makes you feel more like an adult.

A mysterious key item of unclear purpose that was removed from the game at the same time as the Tickle Stick and the Voucher.

Cut After Group 6

Life Berry

Description	Translation
たいりょくが　１の　じょうたいで ひんしじょうたいから　かいふくする	Recover with 1 HP after fainting.

The Life Berry was the original item attached to transferred Generation I Legendaries, acting like an ersatz version of the Focus Sash from Generation IV. The Life Berry is assigned item effect 5 with a power of 1, which is supposed to revive a Pokémon with 1 HP when held. While this is what the effect would do in the 1997 demo, by April of 1999 the effect's code had already been removed.

According to p20922.txt, the Life Berry was replaced by Brightpowder on September 21st. The two reasons for its replacement: consideration of game balance, and the small problem of the effect's nonexistence. That last one might be more important.

Town Map

Description	Translation
マップを　みることが　できる	Use to view the map.

The Town Map is an item from Generation I that made it into the 1999 version of Gold & Silver despite having been obsoleted by the Pokégear even in the 1997 version. Trying to use it in the Spaceworld 1999 demo will replay the last overworld event (flying to town, using a fishing rod, using the Itemfinder, etc.) instead of bringing up the map.

Though its name and description were later deleted, there's some leftover code for the Town Map in the final games.

Poké Flute

Description	Translation
ねむっている　ポケモンを　おこす	Awakens sleeping Pokémon.

The Poké Flute is another Generation I holdover. Using it on the overworld will prompt the "Now that's a catchy tune!" message, unless the player has at least one sleeping Pokémon, in which case the Poké Flute tune will play and Pokémon will wake up. Like the Town Map, using this on the overworld will replay the last overworld event. Using it in battle will always print the catchy tune message even if the current Pokémon is asleep, but it'll still wake that Pokémon up. The Poké Flute tune will not play when used in battle.

Its role in the story (waking up Snorlax) was replaced by the Pokégear's Poké Flute radio station. All of the flute's use text as well as some of the code was left in the final game.

Oak's Parcel

Description	Translation
オーキドはかせ　から ウツギはかせ　への　おとどけもの	Delivery from PROF. OAK to PROF. ELM

Oak's Parcel is the last of the holdover Generation I key items. Instead of being a delivery to Professor Oak, this would be a delivery from Professor Oak to Professor Elm. Trying to use it in the Spaceworld 1999 demo will produce the standard Professor Oak error message, even though this item has special use text that even managed to make its way into the final games.

(Translation: Rangi)

Item Changes

Original Apricorn Balls

Dummied code in USEITEM.DMG reveals that three of the Apricorn Balls were changed some time before July 5th:

• The Direct Ball took the Pokémon's catch rate and multiplied it by 2/3, then used the result as the final catch chance, bypassing the HP and status modifiers normally used in the catch formula. This was replaced by the Level Ball, but the code that made the Direct Ball skip HP and status conditions was left in even after it was replaced; it's not clear if this was intentional or if they just forgot to delete the check.
• The Night Ball had a 3x catch rate at night, and otherwise did nothing. This was replaced by the Fast Ball, but it was reintroduced in a stronger form as the Dusk Ball in Generation IV.
• The Love Ball made it into the game, but there's commented-out code in USEITEM.DMG (directly under pop_ret$) that shows the Love Ball originally worked quite differently.

• The ball had a 4x catch rate multiplier when used on any of the following Pokémon:

Sandshrew	Sandslash	Paras	Parasect	Slowpoke	Slowbro	Geodude	Grimer	Muk	Exeggutor
Lickitung	Jynx	Magikarp	Porygon	Elekid	Granbull	Unown	Norowara	Bellossom	Mankey

• Otherwise, the ball had a 0.25x catch rate multiplier.

The table of Pokémon is labeled "gantetsu_tbl", and a comment on the jump to the 0.25x subroutine is "ガンテツの好きなポケモンでない" or "Not Kurt's favorite Pokémon.", so it seems the original intention of the Love Ball was for it be more effective on Kurt's most beloved Pokémon. (Nevermind the fact that Parasect, Exeggutor, Porygon, Granbull, and Bellossom can't be found in the wild.)

Mobile Mail

Mobile Mail	Bluesky Mail

While first named in Group 5, the code and graphics for this mail already exist in the Spaceworld 1999 demo. The mail design is completely different from the Bluesky Mail in the final game, decorated with the triangle and squares seen in the Surf and Litebluemail, with a pair of cell phones flanking the player's signature. A rather unimpressive design, which is likely why it was changed.

Removed Held Item Effects

There are a good number of consumable items that only have held item effects in the April 28th list. It was decided at some point between April and July that Pokémon would only be able to consume "natural" items, which is why Group 2 introduced so many different berries. Thus, man-made consumables like potions and status-healing sprays had their effects removed.

ID	Effect	99/04/28	Final
1	Restores HP.	Berry (10) Apple (50) Potion (20) Fresh Water (50) Super Potion (50) Soda Pop (60) Lemonade (80) Hyper Potion (200) Max Potion (All)	Berry (10) Gold Berry (30)
2	Restores HP, cures status.	Full Restore (All)	Effect removed
6	Restores PP to one move.	Ether (10) Max Ether (All)	MysteryBerry (5)
7	Restores PP to all moves.	Elixer (10) Max Elixer (All)	Effect removed
10	Cures poison.	Antidote	PSNCureBerry
11	Cures burn.	Burn Heal	Ice Berry
12	Cures freeze.	Ice Heal	Burnt Berry
13	Cures sleep.	Awakening	Mint Berry
14	Cures paralysis.	Parlyz Heal	PRZCureBerry
15	Cures status conditions.	Full Heal	MiracleBerry
31	Raises Attack, consumes item.	X Attack	None
32	Raises Defense, consumes item.	X Defense	None
33	Raises Speed, consumes item.	X Speed	None
34	Raises Sp. Attack, consumes item	X Special	None
35	Protects against stat changes. (E) Raises Sp. Defense. (F) Consumes item. (E&F)	Guard Spec.	None
36	Raises Accuracy, consumes item.	X Accuracy	None
71	Enables escape, consumes item.	Poké Doll	Effect removed
73	Raises crit rate. (E&F) Consumes item. (E)	Dire Hit	Scope Lens

Implemented & Tweaked Effects

Items	Date	Effect
Full Restore	1999/04/28	Restores all HP and cures poison, paralysis, sleep, burn, and freeze.
	1999/08/29	Restores all HP and cures poison, paralysis, sleep, burn, freeze, and confusion.
Lucky Punch	1999/04/28	No effect.
	1999/09/30	When held by Chansey, raises its critical hit ratio by 2 stages.
Metal Powder	1999/04/28	No effect.
	1999/08/17	When held by Ditto, raises its Defense and Special Defense stats by 50%. Effect persists after using Transform.
Full Heal	1999/04/28	Cures poison, paralysis, sleep, burn, and freeze.
	1999/08/29	Cures poison, paralysis, sleep, burn, freeze, and confusion.
PP UP	1999/07/17	Raises the maximum PP of a move by 20%, up to three times.
	1999/09/08	Raises the maximum PP of a move by 20%, up to three times. Can't be used on Sketch.
Quick Claw	1999/07/17	Adds a (20/256)% to go first, regardless of Speed.
	1999/08/23	Adds a (60/256)% to go first, regardless of Speed.
King's Rock	1999/04/28	No effect.
	1999/07/17	Adds a (20/256)% flinch chance to certain contact moves.
	1999/08/23	Adds a (30/256)% flinch chance to certain contact moves.
Stick	1999/04/28	No effect.
	1999/09/30	When held by Farfetch'd, raises its critical hit ratio by 1 stage.
Miracleberry	1999/04/28	When used, cures poison, paralysis, sleep, burn, and freeze. When held, Pokémon can cure itself of poison, paralysis, sleep, burn, and freeze.
	1999/08/29	When used, cures poison, paralysis, sleep, burn, freeze, and confusion. When held, Pokémon can cure itself of poison, paralysis, sleep, burn, and freeze.
	1999/10/08	When used, cures poison, paralysis, sleep, burn, freeze, and confusion. When held, Pokémon can cure itself of poison, paralysis, sleep, burn, freeze, and confusion.
Everstone	1999/07/17	Prevents Pokémon from evolving through level-up and trade.
	1999/09/10	Prevents Pokémon from evolving through level-up, trade, and stones.
Thick Club	1999/04/28	No effect.
	1999/09/30	When held by Cubone and Marowak, doubles their Attack stat.
Focus Band	1999/04/28	No effect.
	1999/08/04	If hit by a damaging move that would cause the holder to faint, there's a (20/256)% chance they'll survive with 1 HP.
	1999/08/23	If hit by a damaging move that would cause the holder to faint, there's a (30/256)% chance they'll survive with 1 HP.
Lucky Egg	1999/04/28	No effect.
	1999/08/17	Holder gains +50% bonus experience points.
Leftovers	1999/04/28	Recovers 1/8 max HP each turn.
	1999/09/08	Recovers 1/16 max HP each turn.
Light Ball	1999/04/28	No effect.
	1999/09/30	When held by Pikachu, doubles its Special Attack stat.
Gold Berry	1999/04/28	Recovers 50 HP.
	1999/07/17	Recovers 30 HP.

Worth noting are the following changes:

• By June 17th, the Gold Berry had its recovery nerfed from 50 HP to 30 HP.
• None of the Pokémon-specific hold items (Lucky Punch, Metal Powder, Stick, Thick Club, Light Ball) did anything until around August 17th, when Metal Powder finally had its effects added. The other four were implemented between August 17th and September 30th.
• Sometime around August 23rd, King's Rock and Focus Band had their effect rates increased by 50%, while Quick Claw had its effect rate tripled.
• On August 29th, items that cured all non-volatile status conditions (poison, paralysis, sleep, burn, and freeze) gained the ability to cure confusion as well. However, while using a Miracleberry cured confusion as intended, if a Pokémon held a Miracleberry and was then inflicted with confusion, the berry wouldn't trigger. This was fixed on October 8th.
• PP Up could originally be used on Sketch, but since Sketch only has 1 PP it didn't do anything but waste the item. This was fixed in September 8th, when it could no longer be used on Sketch at all.
• Leftovers' recovery rate was originally 1/8 of the user's max HP; this was halved on September 8th.
• A Pokémon holding an Everstone could still evolve through an evolution stone until September 10th.

Spreadsheet Discrepancies

All item spreadsheets through August 25th have different effects listed for three items:

• The Thick Club was supposed to raise Cubone and Marowak's Attack stat by two stages, while the final effect doubles their Attack stat.
• The Light Ball would raise Pikachu's Special Attack and Special Defense by two stages. The final effect doubles Pikachu's Special Attack stat.
• The Lucky Egg was supposed to give only 10% bonus experience to the holder instead of 50%.

There's no evidence that the spreadsheet effects were ever coded. In the Spaceworld 1999 demo, the Lucky Egg already gave +50% bonus experience instead of the listed +10%. While the Thick Club and Light Ball weren't implemented in the Spaceworld 1999 build, by September 30th they had their final doubling effects.

Item Prices

Item	99/04/28	99/07/17	99/08/04	99/08/17	99/09/30	99/10/06
Max Elixer	4,800			4,500
Exp. Share	—	10		3,000
Max Ether	2,400			3,000	2,000
Elixir	2,400			2,000	3,000
Moomoo Milk	10	100		1,000		500
Quick Claw	N/A	10		100
Soft Sand	N/A	10		100
Sharp Beak	10			100
Poison Barb	10			100
King's Rock	10			100
Red Apricorn	N/A	10		200
Tinymushroom	5,000	500
Big Mushroom	10,000				5,000
Silverpowder	10			100
Blu Apricorn	N/A	10		200
Amulet Coin	10			100
Ylw Apricorn	N/A	10		200
Grn Apricorn	N/A	10		200
Cleanse Tag	10			200
Mystic Water	10			100
Twistedspoon	10			100
Wht Apricorn	N/A	10		200
Blackbelt	10			100
Blk Apricorn	N/A	10		200
Pnk Apricorn	N/A	10		200
Blackglasses	10			100
Slowpoketail	10,000	2,000		9,800
Pink Bow	N/A	10		100
Stick	10	100	200
Smoke Ball	N/A	10		200
Nevermeltice	10			100
Magnet	N/A	10		100
Pearl	5,000	9,000			1,400
Big Pearl	10,000	18,000			7,500
Everstone	N/A	0		200
Spell Tag	10			100
Miracle Seed	10			100
Thick Club	10			500
Focus Band	10			200
Hard Stone	10			100
Lucky Egg	10			200
Stardust	5,000	9,000			2,000
Star Piece	10,000	18,000			9,800
Metal Coat	10			100
Dragon Fang	N/A	10		100
Leftovers	10			200
Dragon Scale	10			2,100
Berserk Gene	10			200
Sacred Ash	10			200
Heavy Ball	0	10		150
Flower Mail	50	10		50
Level Ball	0	10		150
Lure Ball	0	10		150
Fast Ball	0	10		150
Light Ball	0	10		100
Friend Ball	0	10		150
Moon Ball	0	10		150
Love Ball	0	10		150
Normal Box	0	10
Gorgeous Box	0	10
Sun Stone	0	10		2,100
Polkadot Bow	N/A		10	100
Up-Grade	0	10		2,100
Berry	300	10
Gold Berry	700	10

Worth noting are the following changes:

• The Max Elixer had its price lowered slightly. Max Ether had its price raised, then lowered, while the normal Ether had its price lowered, then raised.
• The Exp. Share was originally a key item, so it couldn't be sold. After it was made possible to get multiple Exp. Shares in a single game, a sell value was added.
• Moomoo Milk had its price changed three times, with the third time being the last price-related change in the game.
• All held items save for Charcoal started out with a price of 10₽. The Stick was the first to change, getting a 100₽ price tag on July 17th and a 200₽ price tag on August 4th. The rest changed by Spaceworld 1999, with type-enhancing items and the Light Ball going up to 100₽, the Thick Club going up to 500₽, and most other items gaining a price of 200₽.
• All Apricorns had an initial price value of 10₽, later increased to 200P by Spaceworld 1999.
• Valuable items went through the most changes:

• By July 17th, the Tinymushroom had its price decimated from 5,000₽ to 500₽, while the Slowpoketail had its price lowered from 10,000₽ to 2,000₽. Both Pearls and Stardust/Star Piece had their prices raised at the same time.
• To make Team Rocket's nefarious plot more understandable, Slowpoketails had their price raised back up to 9,800₽ - the same price as Nuggets.
• At some point between August 25th and September 30th, one or more developers realized that some of the valuable items were a little too valuable and had their prices reduced, with the Big Pearl taking the biggest hit.

• The Dragon Scale, Sun Stone, and Up-Grade all had their prices raised to match the evolution stones from Generation I.
• All of Kurt's Poké Balls originally had a selling price of 0₽, later increased to 10₽ and then to 150₽.
• The Flower Mail, the first mail to be fully implemented, had its price lowered to 10₽ at one point. It was later raised back up to 50₽ to match the other newly-implemented mail types.
• Both the Berry and Gold Berry originally had much higher price tags that were later lowered to 10P after the other berries were put in.

Name Changes

• Moomoo Milk was originally the unbranded and uninteresting Milk.
• The original incarnation of the Squirtbottle was an item known as the Silph Scope 2, named after the device that revealed the identity of ghosts in Generation I. References to the Silph Scope 2 still remain in the final games, though it specifically mentions that the Pokémon it unmasks resembles a tree. A developer interview states that an event where the player encounters a road-blocking Pokémon was added to the story specifically to accommodate Sudowoodo. So, "Silph Scope 2" was probably just a placeholder name for an item that served the same story purpose as the Silph Scope, i.e. gating the player's progress behind a Pokémon that's impossible to fight without using a key item. The earliest instance of the Squirtbottle appearing in item data is the July 17th file, though it's mentioned by name in a bug report (Bug 246 in Document\ダケモン金銀\バグ報告\金銀バグ0601-0828.xls) for build 0621B, meaning it was renamed at least a month earlier.
• The first name for the Flying-type enhancing item was White Feather. While the White Feather did appear in Spaceworld 1997, that item actually weakened the foe's Flying-type moves, with the Black Feather being the one that boosted moves. It's possible that it was renamed so players wouldn't confuse it with the Ho-oh- and Lugia-summoning items. The Flee Feather might have been renamed to Smoke Ball for the same reason.
• The PRZCureBerry had the "paralysis" in its name changed from the katakana マヒ to the hiragana まひ to match how paralysis is written in battle and on the status screen.
• The Mushroom and Deep Red Mushroom were changed to Tinymushroom and Big Mushroom to better indicate their sell values.
• Hard Sand was changed to Hard Stone to distinguish it from the Ground-type boosting item Soft Sand.
• The Red Stone and Red Gem were renamed to Stardust and Star Piece. Since these items are mainly found carried by Staryu, the original names might make players think that they're stealing the poor Pokémon's core.
• Sacred Fire was quickly renamed to Charcoal when someone realized it shared the name of Ho-oh's signature move.
• While there's been a Mail item since the 1997 build, Group 2 is the first instance of multiple types of mail in the game's code. At that point they were all named "Mail", but by August 18th they all gained proper names.
• Surf Mail was named Lapras Mail in the Spaceworld 1999 demo.
• To better indicate how the items worked, Hard Ball and Aqua Ball were changed to Heavy Ball and Lure Ball respectively.
• The Sun Stone originally used kanji in its name, 太陽の石. The game's font does not support kanji.
• The Gold Berry was originally called Apple, its Spaceworld 1997 name. It was later renamed to fit with the new berry types added in Group 2.

Item Descriptions

Pre Spaceworld 1999

Description	Translation
てがみが かける かいためールを　ポケモンに　もたせる	You can write a letter. Give the mail you wrote to a POKéMON.

All mail types used this description prior to the Spaceworld 1999 demo.

1999/07/17 to 1999/08/04

Item	Early Description	Later Description	Notes
Parlyz Heal	マヒ　じょうたいを　かいふくする	まひ　じょうたいを　かいふくする	Paralysis is written in katakana in the older text and hiragana in the final text. The actual status condition is written まひ, so hiragana is correct here.
	Cures paralysis.	Cures paralysis.
Calcium	とくしゅの　きそポイントを　あげる	とくしゅこうげき　とくしゅぼうぎょの きそポイントを　あげる	Changed to explicitly mention both Special Attack and Special Defense.
	Raises the Special stat(s).	Raises the Special Attack and Special Defense stats.
Silver Wing	キラキラ　ひかる　ふしぎなハネ	ぎんいろに　かがやく　ふしぎな　はね	Old text doesn't mention the item's color.
	A strange twinkling shining feather.	A strange silver feather that shines.
PRZCureBerry	もたせると　じぶんで マヒ　じょうたいを　かいふくする	もたせると　じぶんで まひ　じょうたいを　かいふくする	Same change as Parlyz Heal.
	If given to a Pokémon, it'll be able to cure itself of Paralysis.	If given to a Pokémon, it'll be able to cure itself of Paralysis.
Amulet Coin	もらえる　おかねが　２ばい	もたせた　ポケモンを　せんとうに だすと　もらえる　おかねが　２ばい	Changed to note that the Pokémon holding it must enter battle for the effect.
	Doubles prize money.	Doubles prize money if the Pokémon holding it is sent out to battle.
Revival Herb	ひんしした　すべての　ポケモンを かいふく　させるが　とても　にがい	ひんしした　ポケモンを　かいふく させるが　とても　にがい	Early description specifically mentions reviving all Pokémon, not just one.
	Revives all fainted Pokémon, but it's very bitter.	Revives a fainted Pokémon, but it's very bitter.
Berry	たいりょくを　１０かいふくする	もたせると　じぶんで たいりょくを　１０かいふくする	Added a second line to explain the held item effect.
	Restores 10 HP.	If given to a Pokémon, it'll be able to restore 10 of its own HP.
Gold Berry	たいりょくを　３０かいふくする	もたせると　じぶんで たいりょくを　３０かいふくする	Same change as Berry.
	Restores 30 HP.	If given to a Pokémon, it'll be able to restore 30 of its own HP.
Rainbow Wing	キラキラ　ひかる　ふしぎなハネ	にじいろに　かがやく しんぴてきな　はね	Old description is a duplicate of the Silver Wing description.
	A strange twinkling shining feather.	A mysterious rainbow-colored feather that shines.

1999/08/04 to 1999/08/17

Item	Early Description	Later Description	Notes
Bicycle	２ばいの　はやさで　いどうできる	２ばいの　はやさで　いどうできる おりたたみしき　じてんしゃ	Final text adds a line to explain how the player is carrying the bike.
	Lets you move around twice as fast.	A folding bicycle that lets you move around twice as fast.
Rare Candy	ポケモンの　レベルを　１つあげる	ポケモンの　レベルを　１　あげる	Final text removes the counter つ from the description.
	Raises the level of a Pokémon by 1.	Raises the level of a Pokémon by 1.
X Accuracy	しようした　せんとうちゅうだけ わざが　あたるようになる	しようした　せんとうちゅうだけ わざが　あたりやすくなる	Updated for accuracy, as the item doesn't actually guarantee your moves will hit.
	When used in battle, moves will be able to hit.	When used in battle, moves will hit more easily.
Itemfinder	かくされた　どうぐを　さがせる	みえない　どうぐに　はんのうして おとで　おしえて　くれる	While the old description wasn't necessarily wrong, the newer one goes into more detail.
	Lets you search for hidden items.	Reacts to invisible items and informs you with a sound.
S.S. Ticket	ふねに　のれる	こうそくせん　アクアごうに のるための　もの	The new description has a different name for the S.S. Aqua - the S.S. Kōji. This is likely named after long-time Game Freak developer Kōji Nishino.
	You can board the ship.	Used to ride on the S.S. Kōji.
Big Mushroom	めずらしいキノコ　くすりにも　なる たかく　うれる	めずらしい　キノコ たかく　うれる	Older description mentions that it can also be used as a medicine. Probably removed to keep it from being mistaken for a healing item.
	A rare medicinal mushroom. Sell high.	A rare mushroom. Sell high.
Big Pearl	おおきくて　きれいな　しんじゅ たかく　うれる	きれいな　おおつぶの　しんじゅ たかく　うれる	Old description uses 大きく, a general word for something large in scale. New text uses 大粒, specifically used to refer to something of large grain.
	A big, beautiful pearl. Sell high.	A big, beautiful pearl. Sell high.
Red Stone / Stardust	あかくて　きれいな　いし たかく　うれる	あかくて　きれいな　すな たかく　うれる	Changed to reflect the item's new name.
	A beautiful red stone. Sell high.	Beautiful red sand. Sell high.
Red Gem / Star Piece	あかくて　きれいな　ほうせき たかく　うれる	あかくて　きれいな　ほうせきのかけら とても　たかく　うれる	Changed to reflect the item's new name and relative price to Stardust.
	A beautiful red gem. Sell high.	A beautiful red gem fragment. Sell very high.

1999/08/17 to 1999/08/18

Item	Early Description	Later Description	Notes
S.S. Ticket	こうそくせん　コウジごうに のるための　もの	こうそくせん　アクアごうに のるための　もの	The S.S. Aqua gets its final name.
	Used to ride on the S.S. Kōji.	Used to ride on the S.S. Aqua.

1999/08/18 to 1999/08/23

Item	Early Description	Later Description	Notes
Max Elixir	ポケモン１たいの　すべての　わざの ポイントを　ぜんかいふく　させる	ポケモン１ぴきの　すべての　わざの ポイントを　ぜんかいふく　させる	Early text uses the counter 体, which is used for humanoid objects. The final text instead uses the counter 匹, which is used for small animals.
	Fully restores the PP of all moves for a single Pokémon.	Fully restores the PP of all moves for a single Pokémon.
Good Rod	みずべで　つかうと ポケモンが　つれる	ポケモンを　つるための　どうぐ すこし　いい　つりざお	Old description duplicates the Old Rod's text.
	Use it by water to fish for Pokémon.	A good fishing rod for catching Pokémon.
Super Rod	みずべで　つかうと ポケモンが　つれる	ポケモンを　つるための　どうぐ さいこうの　つりざおとして　ゆうめい	Old description duplicates the Old Rod's text.
	Use it by water to fish for Pokémon.	The best fishing rod for catching Pokémon.
Red Scale	あかい　ギャラドスの　ウロコ	いかりのみずうみに　あらわれた あかい　ギャラドスの　ウロコ	A second line was added that mentions the Gyarados's location.
	A scale from the Red Gyarados.	A scale from the Red Gyarados that appeared in the Lake of Rage.
Red Apricorn	まっかな　ぼんぐり	あかい　ぼんぐり	The older description is slightly more descriptive of the item's color.
	A deep red Apricorn.	A red Apricorn.
Mystery Egg	ポケモンじいさんから　あずかった ふしぎな　タマゴ	ポケモンじいさんからの　あずかりもの なんの　タマゴか　わからない	Description edited to play up the mysterious nature of the egg.
	A strange egg you received from Mr. POKéMON.	Something you received from Mr. POKéMON. You don't know what kind of egg it is.
Amulet Coin	もたせた　ポケモンを　せんとうに だすと　もらえる　おかねが　２ばい	もたせた　ポケモンを　たたかいに だすと　もらえる　おかねが　２ばい	Uses a different word for battle - 戦闘 vs. 戦い.
	Doubles prize money if the Pokémon holding it is sent out to battle.	Doubles prize money if the Pokémon holding it is sent out to battle.
Ylw Apricorn	きいろい　ぼんぐり	きいろの　ぼんぐり
	A yellow Apricorn.	A yellow Apricorn.
Everstone	ポケモンが　しんかしなくなる ふしぎな　いし	もたせた　ポケモンが　しんか しなくなる　ふしぎな　いし	Made clearer that it only prevents the Pokémon holding it from evolving.
	A mysterious stone that prevents Pokémon from evolving.	A mysterious stone that prevents Pokémon holding it from evolving.
Lucky Egg	もっている　ポケモンは ２ばいの　けいけんちが　もらえる	もっている　ポケモンは　けいけんちを すこし　おおめに　もらえる	The old description is incorrect, as the bonus was always +50%.
	Pokémon holding it will gain double the experience points.	Pokémon holding it will gain a little more experience points.
MysteryBerry	もたせると　せんとうちゅう わざポイントを　かいふく　する	もたせると　せんとうちゅう　じぶんで わざポイントを　かいふく　する	Text added to clarify that only the holder's PP will be restored.
	When held in battle, recovers Power Points.	When held in battle, the holder recovers their Power Points.
Dragon Scale	とくていのポケモンを　しんかさせる	ドラゴンタイプの　ポケモンが たまに　もっている　ふしぎな　ウロコ	Final description is more vague on what the item actually does.
	Evolves a certain Pokémon.	A mysterious scale that Dragon-type Pokémon sometimes hold.
Up-Grade	とくていのポケモンを　しんかさせる	シルフ　コーポレーションせいの ふしぎな　きかい	Same change as the Dragon Scale.
	Evolves a certain Pokémon.	A mysterious machine made by Silph Corporation.

1999/08/23 to 1999/08/25

Item	Early Description	Later Description	Notes
Up-Grade	シルフ　コーポレーションせいの ふしぎな　きかい	ふしぎな　はこ シルフ　コーポレーションせい	Description slightly simplified.
	A mysterious machine made by Silph Corporation.	A mysterious box made by Silph Corporation.

1999/08/25 to 1999/09/30

Item	Early Description	Later Description	Notes
Stick	ふつうの　ながネギ やすく　うれる	ふつうの　ながねぎ やすく　うれる	Old description uses katakana for negi, while the final text uses hiragana.
	An ordinary scallion. Sell low.	An ordinary scallion. Sell low.
Pearl	きれいな　しんじゅ たかく　うれる	きれいな　しんじゅ やすく　うれる	Description was changed after the sell price was lowered.
	A beautiful pearl. Sell high.	A beautiful pearl. Sell low.
Up-Grade	ふしぎな　はこ シルフ　コーポレーションせい	ふしぎな　はこ シルフ　カンパニーせい	Someone remembered that (in Japan) the "Co." in Silph Co. stands for Company. The change was made around September 13th according to p20913.txt.
	A mysterious box made by Silph Corporation.	A mysterious box made by Silph Company.

(Translation support: N. Onymous)