Extreme Hybrid Racing Cheat mode: Choose the "Misc. Options" selection at the main menu, then enter XTRCHT! as a code. Note: You will not be able to save the game if this code has been enabled. Invisibility: Choose the "Misc. Options" selection at the main menu, then enter NOTHING as a code. Upside down mode: Choose the "Misc. Options" selection at the main menu, then enter CEILING as a code. Skulls are monkeys: Choose the "Misc. Options" selection at the main menu, then enter MONKEY as a code. Skulls are monkey skulls: Choose the "Misc. Options" selection at the main menu, then enter BONES as a code. Display game version: Choose the "Misc. Options" selection at the main menu, then enter VERDATE as a code.