I know that there are a allot of retail games out there with the debug function's still in tact. What about gathering all that information in this topic? At this time I don't have any known to work codes to put in this topic; I have some for Sonic Adventure 1 and some other DC games in a txt file somewhere. Those I'll post later. Lost Planet - Xbox 360 LB, RB, Left stick & Right stick at the same time. source: from the information sheet supplied with the debug copy. Since I don't have the retail game only the debug copy I'm not sure if they left the options in tact. So feel free to test.
The game was patched atleast once before the game ever came out in the US, so you should try it with your hard drive not inserted so it runs the executable on the disc.
Couldn't tell you really. I do know that a patch after that added a bunch of things like in game lobbys. Either way there have been 2 patches since the game's release.
Do one acessed via Action Reply or other sheat devices count? Because then you can add Super Smash Brothers: Melee to the lsit.
Sonic Adventure's is...interesting if you've got acid handy. The ground you step on is broken up into the polygonal shapes and light up when you step on them. Some numbers/letters also appear that signify something but since it's rather late I've managed to forget what exactly. I think they're coordinates, same as the Sonic 2 debug code if memory serves. Most debug codes aren't anywhere near as cool as FFVII's. NiGHTS has debug code left on the retail disk but last I heard noone knew how to activate it.