Duke Nukem 64

Damn! Those censoring scum are going to pay for censoring up this game!

There are a lot of leftover bits from the PC version lingering in the game. Some of it has been changed to protect the identity of those who have been changed. In other words, this edition has been altered in various ways from the PC version.

Unused textures
Graphics left-over from the PC version are not going to be included, since there are tons of it and it is not relevant.

Babes hatching
Tiles 1294-1295, 3821-3824



Only the fourth and last sprites are used in the game. Interestingly, the game actually displays the first frame of the hatching animation, instead of the actual babe sprite. For comparison the sprites from PC:



The same goes for the other babes (only the first and last sprites are used):

Tiles 3805-3809



Tiles 3821-3824



Assault Trooper frames
Tiles 1700-1702



These tiles are also not used for the enemy in the PC version too, but in this case they have created new sprites for it.

Pistol clip
Tile 2531



This new sprite was meant to be part of the pistol reloading animation, but is not used in the 64 version.

SMG muzzle flash
Tile 2539



It has the exact same size of the muzzle flash used for the Pistol and SMG in the final version.

Menu font characters
Tiles 3004-3009



These characters are not used in the game. Even if one of the game texts contains one of these, they won't be displayed. For example, using a hex editor you can see there is interrogation mark in the text "ARE YOU SURE YOU WANT TO SAVE OVER AN EXISTING GAME?", however it is missing in the game.

Gamepad
Tile 3596



The format of the the image is that of sprites displayed above the screen. Probably it was meant to be used in the control setup options. For comparison, here is a screenshot from the PSX port:



Smoke
Tile 3637



The above is placed between the Grenade Launcher sprites. Perhaps it was intended to be used for the "Gas Grenades"?

Explosions
Tiles 3673, 3690, 3702



The first one is close (but not identical) to the circle of fire of the 3D explosions.

Crosshairs
Tiles 3703-3707



These crosshairs do not appear in the game, since the game only has one type. However in Duke Nukem: Zero Hour there are different crosshairs. Since only one of the above is actually serious, perhaps it was meant to be used only via a Cheat Code or something.

Missile flash
Tile 3724



Can still be seen in early screenshots:



Train part
Tile 3733



Unused door texture for the train in Rabid Transit.

Sparkles
Tiles 3763-3765



Similar to the effects left by babes or enemies killed by the Plasma Cannon. Perhaps using one sprite for each particle would consume too much CPU?

Bullet hit
Tiles 3815-3820



This one is very similar to the one used in the actual game, but is somewhat different, the edges are cut and also use a transparent background.

For comparison, here is the actual sprite set used in the game:



Bookcase
Tiles 3863-3866



Replica of the bookcase seen through the game. Since it is divided in 4 pieces, the resolution is not compressed. The Playbook magazine with a naked woman on the cover can be seen on the top left of the screen, even if with some difficulty.

Truck part
Tile 3896



What appears to be a window located among the textures for the truck in Gun Crazy and Duke-Burger.

SMG muzzle flash
Tile 3918



Early muzzle flash sprite for the SMG. Can still be seen in early screenshots:



Unknown circle
Tile 3920



Unknown sprite. Since it has a black background, it was probably meant to be used with transparency effect.

Glitches
Tiles 3628, 3942



Poorly compressed copies of Pistol/SMG muzzle flash and the unused unknown circle.

Unknown spot
Tile 3925



Unknown sprite. Seems to be meant to be used on top of the screen. It is located before the sprites for the intro scene.

Car parts
Tiles 3944-3945, 3949



Unused textures for the car that appear on the very beginning of the first level.

Unused sounds
There is one unused sound in the game. Here is a list of the new sounds compared to the PC version, with the proper IDs:


 * 256-263 - New Duke lines
 * 264-266 - Plasma Cannon firing
 * 267 - Grenade Launcher firing
 * 268 - SMG firing
 * 269 - Unknown
 * 270 - Babe saved
 * 271 - Plasma Cannon projectile explosion
 * 272-276 - Bullet hit wall

The unused sound:

For comparison, this video shows a man firing rubber bullets.

Unused/Leftover Text
Using a hex editor, you can find many pieces of text that are unused.

Texts
The following humorous messages are floating in the ROM, seemingly related to some early debug mode.


 * Shit ret error %d
 * Arse ret error %d
 * Sprite overflow caused by TOAD
 * Sprite overflow caused by LARD
 * Sprite overflow caused by DOG
 * Sprite overflow caused by ONION
 * Sprite overflow caused by LEMMING
 * Sprite overflow caused by HAMSTER
 * Sprite overflow caused by GERBIL
 * Sprite overflow caused by CHEESE
 * Sprite overflow caused by LEMON

Messages
The following are messages meant to be displayed in-game.


 * SHOW MAP: OFF / SHOW MAP: ON - Used in the PC version. The N64 version does not have a map function available to the player.
 * CHEET! - Developer humor? Replaces the GOD MODE: ON message from PC version.
 * GOD MODE: OFF - Used upon activating the cheat in the PC version. Invincibility is a menu cheat, so this was unnecessary.
 * SOUND: ON / SOUND: OFF - There is a volume meter in the Options menu, but no all-or-nothing option available to the player.
 * MUSIC ON / MUSIC OFF - There is no background music in the N64 version.
 * YOU CANNOT DEFEAT ME WITH PARAMECIUM ALONE - ...Wut? Appears to be a reference to Forgotten Worlds on the TG16. Probably a developer in-joke.
 * GAS GRENADES! - The Grenade Launcher looked like it was going to get a weapon upgrade item as well. No idea what they would have done special. The concept seems to have been reused in Duke Nukem: Zero Hour for the Radium Cyanide Launcher.
 * RUBBER BULLETS! - Alternate ammo presumably for the SMG, since the Pistol already has the Dum Dum bullets. No idea what they would have done special.

PC Version Messages
All these are messages that exist in the PC version of the game, used or unused.


 * ALL DOORS UNLOCKED - Possibly a debug cheat or something. Not used in the N64 version or the PC version. Probably related to DNUNLOCK cheat.
 * SWITCH OPERATED ONLY - Apparently meant to be a message displayed when trying to open a locked door.
 * YOU'RE TOO GOOD TO BE CHEATING! - Used upon trying to use a cheat in the "Damn I'm Good" setting of the PC version. You can actively use cheats at any difficulty in the N64 version.
 * TYPE THE CHEAT CODE - PC version leftover. There is no typing.
 * DETAIL: LOW and DETAIL: HIGH - Resolution settings unnecessary in the N64 version.
 * WILL ALWAYS HAVE NO FUTURE - ...Huh?
 * BRIGHTNESS LEVEL - Eight text strings ranging from one to eight in words. There is no option to adjust brightness in the N64 version. Strangely, Six through Eight show up far later on in the set of text that it's lumped in with.
 * SCREEN CAPTURED - Used for taking screenshots apparently. Obviously not available to the player.
 * Press F1 for Help - Oddly enough, not capitalized like the others. Even odder that it's still in the N64 version as there is no help menu available to the player, nor an F1 key.
 * BODY SUIT - Leftover from the space suit item deleted from the PC version.
 * MOUSE AIMING: ON / MOUSE AIMING: OFF
 * CHEAT CODE: UNRECOGNIZED - PC version leftover. There is no typing.
 * HOLODUKE NOT FOUND YET! - For the inventory shortcut keys in the PC version. Not used here.
 * JETPACK NOT FOUND YET! - See the previous description.
 * WEAPON LOWERED / WEAPON RAISED - Leftover from the PC version's keys for lowering/raising your weapon, which were pretty useless.
 * SPACE SUIT ON - Another leftover from the deleted space/body suit.
 * BUY MAJOR STRYKER - PC Easter Egg/advertisement cheat. Inaccessible in the N64 version.
 * MIGHTY FOOT ENGAGED - The N64 version does not allow you to hold a weapon and kick at the same time through normal means.
 * WEAPON MODE ON / WEAPON MODE OFF - Leftover from the PC version multiplayer - hovered a weapon sprite above every player, to show what gun they were holding.
 * FOLLOW MODE ON / FOLLOW MODE OFF - Leftover from PC version's automap - Follow Mode toggled following the player's position on the automap, or scrolling around it freely.
 * RUN MODE ON / RUN MODE OFF - Duke always goes at one fast speed in the N64 version normally.
 * SCROLL MODE ON / SCROLL MODE OFF - No idea yet again. Debug tools, speculatively?
 * REGISTER COSMO TODAY! - Another PC Easter Egg/advertisement cheat. Inaccessible in the N64 version.
 * ALL LOCKS TOGGLED - Developmental-type cheat that could be used in either version.
 * SCREEN SAVED - Used in the PC version when taking screenshots with the F12 key. Obviously unused here.
 * YOU'RE BURNING! - Leftover from the deleted PC flamethrower. Why it's lingering here is anyone's guess.
 * VIEW MODE OFF / VIEW MODE ON - Text string for the third-person view cheat. The cheat exists (see below), but the Gameshark code does not activate this text string.
 * CLIPPING ON / CLIPPING OFF - Text string for the clipping cheat. The cheat exists (see below), but the Gameshark code does not activate this text string.
 *  !!! INCORRECT VERSION !!!  - This also remains unused in the PC version. Why is this here?
 * GOT ALL WEAPONS/AMMO - Unused cheat string. Unnecessary in the N64 version because the All Items cheat gives you all the weapons, inventory items, and keys upon activation during a level.
 * GOT ALL INVENTORY - See above.
 * GOT ALL KEYS - See above again.
 *  - Placeholder. A note is left for someone who is trying to change the content from User.con.

Disabled Cheats
Using a Gameshark, you can re-enable two cheats from the PC that still happen to be in the game and fully coded. Activator codes have been activated to toggle the cheats on and off at will. The toggling will work better with the "Control Stick Move" control setting. Neither code will activate a text string telling you that the code is enabled, but it should quickly become obvious if the cheat is enabled.

Third-Person View (R+Left to enable, R+Right to disable)
 * D12AD164 0210
 * 802A5A53 0001
 * D12AD164 0110
 * 802A5A53 0000

Toggle Clipping (R+Up to enable, R+Down to disable)
 * D12AD164 0810
 * 802AAA6F 0001
 * D12AD164 0410
 * 802AAA6F 0000

Mighty Boot Engaged (A+Z)
 * D12AD164 A000
 * 802A5A23 00FF
 * D12AD164 A000
 * 802A5A5B 000F



Number of Players (change the last number)
 * 801012C0 0001



Four players cooperative.

Number of Bots (change the last number)
 * 801012C4 0001

Hollywood Holocaust


With the "No Clipping" cheat on, go to the bathroom area in Hollywood Holocaust. Where the first picture is, go straight through the wall. You'll come to a mirror image of the restroom area, but both of the passageways will lead to dead ends. There are also no objects in this room. It's a safe bet to say that they were at one time trying to test mirror effects in the N64 port, but for one reason or another, the effect was scrapped.

Presumably this effect would work the same way it does in the PSX port. Although the mirrors are functional in that version, it can only reflect sprites and requires the level designer to create identical areas behind the mirrors.

Dark Side


In the main "T" hub hallway, go toward the Alpha transport. When you get as far as the button on your left that opens the nearby elevator up, use the "No Clipping" cheat and strafe left into the wall. You will appear on what was a separator ledge between the open area of the hallway and the hallway itself in the PC version, but was merely blocked off by walls for the N64 version.

Piracy


On the cliff face where the front end of the ship is, use a jetpack to fly into the highest part of the wall to find a lone security camera! This multiplayer level is really just a modified portion of the "Babe Land" level from Duke Nukem 3D: Atomic Edition, and was mostly a cut and paste job. There are no security cameras in this level, much less anything to view a security camera through, so its inclusion in this level was merely an oversight.

Incubator


From the beginning of the level, go through the first two rooms and into the room where you press the off/on switch to open the windows. In the little room in front of you that opens up after you walk in, walk up to it, but stand just outside of it. Turn left, and use the “No clipping” Gameshark code and slowly walk through the wall until you come to a tiny, tiny room with a grey and blue wall in front of you.

To your left is a switch. Activating the switch opens a panel with scuba gear. To your right is an odd door with the medical red cross on it. Open this up to find a Portable Medkit and Vitamin X.

No idea why this room is even here, much less has items in it. This room also exists, still unused, in the PC version of the map.

Movie Set


Right at the end of the level, while you’re going down the stairs to finish the level, stop at the next to last step on the stairs and turn right. Turn on the No Clipping cheat and go through the wall, going directly forward. You’ll end up walking through nothing for a while, but then you’ll end up in a room with a large health container, armor, and if you’re lucky (or just play around the area), one of the columns with the “S” texture on top will be lowered to reveal a Holoduke.

This room is in the PC version, and like with the Incubator area, it's surprising that this was left in with all the changes made to the levels in the game, especially since this level was altered from its iteration in the PC version. No idea why it still remains.