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You Don't Know Jack cheats & codes
8 codes for You Don't Know Jack on the PlayStation, including GameShark codes.
You Don't Know Jack GameShark codes
How to use: GameShark (sold as Action Replay outside North America) codes are entered on the device's menu or in your emulator's cheat menu. Some games need a "master code" or "must be on" code enabled first, so turn that on if a list includes one.
| Effect | Code |
|---|---|
| Infinite Time | D00919F4
0200
800919F4
023A |
| Max Score P1 | 800AB440
967F
800AB442
0098 |
| Max Score P2 | 800AB448
967F
800AB44A
0098 |
| Max Score P3 | 800AB450
967F
800AB452
0098 |
| P1 Can Always Screw | 800AB444
0001 |
| P2 Can Always Screw | 800AB44C
0001 |
| P3 Can Always Screw | 800AB454
0001 |
| Start On Round Modifier | D00A993C
0000
800A993C
00?? |
Using cheats today
Original cheat devices like the Game Genie, Action Replay and GameShark still turn up second-hand and work with original cartridges. Most modern emulators also have a built-in cheat menu that accepts these formats, so you can toggle codes on and off without extra hardware. Codes can differ between regional releases and revisions of a game; if one doesn't work, try the code list for another version.
Cheats can corrupt save files in rare cases, so back up your saves before experimenting.
More PS1 games with cheats
Back to You Don't Know Jack: is it worth playing?
Cheat codes are from the libretro-database community collection, used under CC BY-SA 4.0; the code tables on this page are shared under the same license. Codes are provided as-is: some may not work on every version of the game.