Alien Trilogy
Level Skip, See the Ending
Level Skip:
At the password screen, enter the password FLYTO followed by a level number (0-34) to skip to any level in the game.
See the Ending:
At the password screen, enter the password FLYTO35 to see the game's ending.
Amok
Invincibility
Enter the password XBABYX. During a game, your life meter will decrease when you take a hit, but you'll never die.
Level Select:
At the title screen, select Options. Then enter the password ZZZCYX. A level-select option will appear over the Password option. Now you can go to any level.
Andretti Racing
Car Selection Passwords:
Start a career and enter the following passwords at the registry screen:
Indy Car selection cheat: GO BRUINS!
Stock Car selection cheat: GO BEARS!
Game Parameters Cheat:
During gameplay, press Pause. Highlight Race Statistics, then simultaneously press and hold R and C to bring up the Parameters cheat menu.
Other Cheats: At the registry screen, enter the following passwords:
Wire frame mode: WYRED
Phat car mode: PHATCARS
Press start car: PRESSSTART
Area 51
Kronomorph Mode: Don't shoot anything except the first three STARR Team members. When you do, you'll be taken to a quick briefing screen, and when the game continues, you'll see the rest of the game in infra-red vision as you assume the role of an alien hunter.
Astal
Refill the Life Bar.
Refill Life Bar: Pause a game and press Down, R, Up, L, X, A, Y, B, Z, C, Right, Left. Astal should now have a full life bar.