Major Havoc Game System: MAME Cheat Category: HEX cheat Game Company: Unknown Game Category: Unknown Hint, Cheat, Walkthrough:   Major Havoc =========== mhavoc:0:088F:5:0:Infinite lives P1 mhavoc:0:088D:64:0:Infinite Oxygen mhavoc:0:0890:A:0:Infinite Lives P2 mhavoc:0:088A:99:0:Infinite Reactor Time mhavoc:0:08AE:80:0:Infinite Shields ----------------------------------------------------------------------------- INFORMATION: How do you use these cheats? Simply put them, one code per line, into a file in your MAME directory called cheat.dat. Start MAME with the -cheat switch. Hit TAB to go to the menu, and "cheat" should be one of the options. Select it, then select "Load And/Or Enable A Cheat." Turn on the cheats you wish to use, and go back to your game. Make sure not to turn cheats on during the game's boot-up sequence, or it may fail the RAM test and fail to work properly. For in-depth information on the cheat system, be sure to read the cheat.doc file that comes with MAME 0.30.