Retail Games with Hidden Debug Code

Gran Turismo 3 has hidden cars

 

how do you get this to work? is the version important? I tried it with Final Fantasy VIII [disc1of4][SLUS-00892], and the codes on the internet don't seem to work.

 

Sonic Adventure 2 for Dreamcast had sonic wallpaper's on the disc if you put them in your PC (doesn't work with backups)

 

The Legend of Zelda Ocarina of Time had a some kind of a useless debug menu leftover. I can't really remember how to open it, but the "debug menu" allows you to do nothing. It contains some hexcode and a wierd message, the programmers must have left there.

 

h: How do you get that ?

 

As does Sonic Jam for Saturn.

 

The original Syphon Filter for Playstation had a debug menu. I'm almost certain that I used a gameshark code to access it, but I can't find it mentioned anywhere online now.

I know it exists because that's how I beat the game. There were a few options, but the only ones I remember were the ability to toggle invisibility and infinite health.

 

The old Tenchu on the psx has a complete debugmenu hidden on it (us)

 

we need a gameshark hacker on this, stat!

 

I remember getting a debug menu in Manhunt (PS2) using a cheat disc that came with a magazine. There was quite a few things you could change but the only 2 i remember was an option to change the weather and an option to make you invisible to enemies.

 

Well its been a while since I've been here so I thought I would pipe in. Yes it is 100% possible to patch a ROM/ISO with gameshark codes (however this is an incorrect way of stating it though since your really patching the raw hex) I have done it to many Gamecube and PS2 games. Only problem is every system and cheat devices have a set encryption along with the combination between decrypting how the system handles the iso/rom addresses and decrypting the cheat encryption into raw hex makes it kind of a boring process and just overall easier to just enable a code. I could propably do it if motivated but as of late gaming and code haven't interested me as much. But yes its possible if you can decrypt the game genie code into raw hex and find the address you shouldn't have a problem hexing it in. I do remember doing something like switching the hex reversing every 2 bytes before finding the address for ps2 before patching it to a slus/sles file, ugh its been so long... you may not need to do that though with NES.

PS: also if the code contains a joker command then patching is useless since you can't gain control of the edited code if its assigned to a button unless your simply enabling the button to do its original function ie. Debug but if you force the button to bring up said menu when the code isnt already pressent for that specific button patching is useless.