My two favorite project games, Battlezone, and Tribes, had TONS of abandoned code and stuff in them... none of which is listed on that site yet.
If I had time, I'd dig up my old files and add the lost codes to the website... but I don't.
Battlezone had things like cafeterias, which were meant to improve your soldiers and pilots, and also had unused vehicles.
Their only example for Tribes is the "DaJackle" code, which doesn't fit their criteria of "unearthing and researching unused and cut content" since that was actively functional code... if you actually tried to connect with a pirated "DaJackle" copy of the game, that working code would kick and ban you.
Tribes was chock full of unused and cut building, weapons, skins, and half-developed game code that just never got used and that never made it to the real game (until I fixed alot of it for my build of it . The only example I have to show you is the screenshot below of "bigun" as they called it, an unfinished weapon in the original game's code. I fixed the code, which was originally designed to be a fixed-in-place turret players could man, and I added it to the Heavy Personnel Carrier as a door-gun.
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