Knockout Kings (PSX) Cheats

Knockout Kings cheats, and Codes for PSX.


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Big Head Mode
At the main menu, hit the following sequence:

Left + Circle, Left + Triangle, Left + Square, Left + X

Note: Works for a Created player only
Play as a Bear
Enter the following code at the Main Menu:

Right + Square, Right + Triangle, Right + Circle, Right + X

You should now have this new boxer in your line up.
Upgrade Boxer
Name your boxer PSIRULES, then in Career Mode fight one match. Then leave and come back and your boxer should be upgraded.