Cheats for Hybrid Heaven for N64

Begin game play with the screen resolution set at high resolution letterbox. Use every save point during game play. Reset the Nintendo 64 and toggle the screen resolution to the opposite setting after each save. A cheat menu with the following options will be unlocked at the title screen: invincibility, all moves, all items, no key renewing, play as monster, play as Alien, play as President, and level select.

Successfully complete the game on the ultimate difficulty setting. Then at the title screen, press L, R, L, R, Z. If you entered the code correctly, you will hear a sound.

When you walk into some rooms they will contain people that you will have to fight. To get the overall advantage over them, allow them chase you around the room until you get behind them. When you get close enough, "Advantage" will appear at the top of the screen. Not only will you have the advantage, you will start with full power and will take more of the creature's life away since you attacked from behind.

A lot of life chargers are required for this trick. You have to fight the mutants to learn different types of fighting moves. Fight one over and over again by going back into the room. Sometimes the best thing to do is to allow a mutant hurt you first. A "bing" sound will indicated that you have learned a new fighting ability. Do not forget to save the moves.