Donkey Kong Jr. is the NES port of Donkey Kong's sequel which would later be adapted into an educational title.
Unused Enemy Behavior
Memory addresses 0x510-0x515 are meant to store parameters for enemy behavior based on the current difficulty level, but 0x513 is unused. Based on a section of unused code in Revision 0 at 0xDFAE, it appears that this would have been a way for the game to increase the chance that new enemy spawns move towards Junior when he is close to the top of the stage. The normal rate at which this occurs is stored at 0x515, though it is set at a constant value of 0xB0 (68.75%) for all loops. This section of code is removed from Revision 1, though 0x513 still remains unused.
Revisional Differences
Revision 1
Title Screen
In Revision 0, holding Select on the title screen starts a 64-frame countdown, after which the game will begin automatically scrolling through the menu options. Memory address 0x6A keeps track of how many times it has advanced; once it loops back to 0x00, the countdown begins again. Revision 1 completely removes this function.
Controller Input
Similar to Revision 0 of Donkey Kong, Junior cannot move at all when the D-Pad is held diagonally. In Revision 1, the controller reading code was improved so that the first direction pressed has priority: if the D-Pad is rolled from Up / Down to diagonal Junior will not start walking, but if the D-Pad is rolled from Left / Right to diagonal he will not stop walking.
Stage 2 Glitch
In Revision 0, if the final vine of Stage 2 is grabbed from the left side, a glitched ending animation will occur: Junior will climb down the vine instead of up, then appear on the final platform. This is in part due to the platform's hitbox jutting out too far to the right, preventing Junior from climbing up normally.
Revision 1 shortened the platform's hitbox by two pixels to prevent this from happening.
Palettes
In Revision 0, some of the fruit becomes lighter-colored while falling. Revision 1 edited the corresponding palette so they always retain their darker colors.
Revision 0 |
Revision 1 |
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The chains in Stage 4 were brightened to help them stand out from the background.
The controls were slightly modified so the player can press Up and Down to switch between options at the title screen.
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NES/FDS | Super Mario Bros. • Super Mario Bros 2. (FDS) • Super Mario Bros. 2 (NES) (Prototype, Doki Doki Panic) • Super Mario Bros. 3 |
SNES | Super Mario World (Localization Prototype) • Super Mario All-Stars • Super Mario World 2: Yoshi's Island (Prototypes) |
Satellaview | BS Super Mario USA • BS Super Mario Collection |
Nintendo 64 | Super Mario 64 (iQue Prototypes, 64DD Version) |
GameCube | Super Mario Sunshine (Demo) |
Wii | Super Mario Galaxy • Super Mario Galaxy 2 • New Super Mario Bros. Wii |
Wii U | New Super Mario Bros. U • New Super Luigi U • Super Mario 3D World |
Game Boy (Color) | Super Mario Land • Super Mario Land 2: 6 Golden Coins • Wario Land: Super Mario Land 3 • Super Mario Bros. Deluxe |
Game Boy Advance | Super Mario Advance • Super Mario Advance 2 • Super Mario Advance 3 • Super Mario Advance 4 |
Nintendo DS | Super Mario 64 DS • New Super Mario Bros. |
Nintendo 3DS | Super Mario 3D Land (Demo) • New Super Mario Bros. 2 |
Nintendo Switch | Super Mario Odyssey • New Super Mario Bros. U Deluxe • Super Mario 3D All-Stars • Super Mario Bros. 35 • Super Mario 3D World + Bowser's Fury |
iOS, Android | Super Mario Run |
Game & Watch | Game & Watch: Super Mario Bros. |
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Mario Kart |
Console Games | Super Mario Kart (Prototypes) • Mario Kart 64 (iQue Prototype) • Mario Kart: Double Dash!! (Demos) • Mario Kart Wii (Mario Kart Channel) • Mario Kart 8 • Mario Kart 8 Deluxe (Prototype) |
Handheld Games | Mario Kart: Super Circuit • Mario Kart DS (Demos) • Mario Kart 7 • Mario Kart Tour |
Arcade Games | Mario Kart Arcade GP • Mario Kart Arcade GP 2 • Mario Kart Arcade GP DX |
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Mario RPGs |
Super Mario RPG | Legend of the Seven Stars |
Paper Mario | Paper Mario • The Thousand-Year Door (Paper Mario 2 Demo) • Super Paper Mario • Sticker Star • Color Splash • The Origami King |
Mario & Luigi | Superstar Saga (+ Bowser's Minions) • Partners in Time • Bowser's Inside Story (+ Bowser Jr.'s Journey) • Dream Team • Paper Jam |
Mario + Rabbids | Mario + Rabbids Kingdom Battle |
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Mario Party |
Console Games | Mario Party • Mario Party 2 • Mario Party 3 (Prototype) • Mario Party 4 (Demo) • Mario Party 5 (Demo) • Mario Party 6 (Demo) • Mario Party 7 • Mario Party 8 • Mario Party 9 • Mario Party 10 • Super Mario Party • Mario Party Superstars |
Handheld Games | Mario Party Advance • Mario Party DS |
Web Games | Mario Party 7: Bowser's Lair Hockey |
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Mario Sports |
Golf | NES Open Tournament Golf • Mario Golf (N64, GBC) • Mario Golf: Toadstool Tour • Mario Golf: Advance Tour • Mobile Golf |
Tennis | Mario Tennis (N64, GBC, Virtual Boy) • Mario Power Tennis • Mario Tennis: Power Tour • Mario Tennis: Power Tour - Bicep Pump • Mario Tennis Aces |
Strikers | Super Mario Strikers (Demo) • Mario Strikers Charged • Mario Strikers: Battle League |
Baseball | Mario Superstar Baseball (Mario Baseball Demo) • Mario Super Sluggers |
Mario & Sonic at the Olympic Games | Beijing 2008 (DS, Wii) • Vancouver 2010 (DS, Wii) • London 2012 • Rio 2016 (Wii U) |
Other | BS Excitebike Bunbun Mario Battle Stadium • Super Mario Bros. + Duck Hunt + World Class Track Meet • Dance Dance Revolution Mario Mix • Mario Sports Mix • Mario Pinball Land |
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Dr. Mario |
Console Games | Dr. Mario (Prototypes) • Tetris & Dr. Mario • Dr. Mario 64 • Nintendo Puzzle Collection • Dr. Luigi |
Handheld Games | Dr. Mario • Dr. Mario & Puzzle League • Dr. Mario World |
Web Games | Dr. Mario: Vitamin Toss |
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Super Mario Maker |
Console Games | Super Mario Maker • Super Mario Maker 2 |
Handheld Games | Super Mario Maker for Nintendo 3DS |
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Mario vs. Donkey Kong |
Handheld Games | Mario vs. Donkey Kong (Demo) • Mario vs. Donkey Kong 2: March of the Minis (Demo) • Mario vs. Donkey Kong: Minis March Again! • Mario vs. Donkey Kong: Mini Land Mayhem! • Mario vs. Donkey Kong: Tipping Stars • Mini Mario & Friends: amiibo Challenge
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Console Games | Mario vs. Donkey Kong: Tipping Stars • Mini Mario & Friends: amiibo Challenge |
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Mario Paint/Artist |
Console Games | Mario Paint (Prototype) • Mario no Photopi • Mario Artist Paint Studio (Prototype) • Mario Artist Talent Studio • Mario Artist Communication Kit • Mario Artist Polygon Studio |
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Mario Bros. |
Arcade Games | Mario Bros. • Donkey Kong, Donkey Kong Jr., Mario Bros. |
Console Games | Mario Bros. • Kaettekita Mario Bros. |
Handheld Games | Mario Bros. Classic • Mario Clash |
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Luigi's Mansion |
Console Games | Luigi's Mansion • Luigi's Mansion 3 |
Handheld Games | Luigi's Mansion • Luigi's Mansion: Dark Moon |
Arcade Games | Luigi's Mansion Arcade |
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Mario's Picross |
Console Games | Mario's Super Picross |
Handheld Games | Mario's Picross • Picross 2 |
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Educational |
Computer Games | Mario is Missing! (DOS) • Mario's Early Years (DOS) • Mario Teaches Typing (DOS) |
Console Games | Mario is Missing! (NES) • Mario is Missing! (SNES) • Mario's Time Machine (NES) • Mario's Time Machine (SNES) • Mario's Early Years: Fun With Letters |
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Donkey Kong |
Arcade Games | Donkey Kong • Donkey Kong Jr. • Donkey Kong, Donkey Kong Jr., Mario Bros. |
Computer Games | Donkey Kong (Atari 8-bit family) (Prototype) |
Console Games | Donkey Kong (NES) • Donkey Kong Jr. (NES) |
Handheld Games | Donkey Kong (Game Boy) |
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Wrecking Crew |
Console Games | Wrecking Crew • Wrecking Crew '98 |
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Captain Toad |
Nintendo 3DS, Switch | Captain Toad: Treasure Tracker |
Wii U | Captain Toad: Treasure Tracker |
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Other |
Arcade Games | Mario Roulette |
Computer Games | Mario's Game Gallery |
Console Games | I am a Teacher: Super Mario no Sweater • Nintendo World Championships 1990 • Nintendo Campus Challenge 1991 • Mario & Wario • Undake 30: Same Game Mario Version • Yoshi's Safari • Hotel Mario • Super Mario's Wacky Worlds • Fortune Street |
Handheld Games | Jaguar Mishin Sashi Senyou Soft: Mario Family • Super Princess Peach • Photos with Mario • Mario Clock |
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See Also |
Donkey Kong • Wario • Yoshi |