Serious Sam Cheats
How to use these cheats
Button names refer to the Xbox controller — A, B, X, Y, the LB/RB bumpers, LT/RT triggers and the D-pad. Unless told otherwise, enter codes from the pause or options menu, or while playing. Some cheats disable achievements for that save — keep a separate save before you start.
Serious Sam on Xbox hides its cheats behind a button sequence at the main menu.
Cheat menu: at the main menu, click and hold the left analogue stick, then press Black, White, Y while still holding it. A Cheats option appears in the menu, giving access to God mode, all guns, level selection and more.
Mental mode: successfully complete the game in Serious mode, then start a new game. Mental fades in and out beneath Serious on the difficulty select; in Mental mode enemies appear and disappear as you fight them.