Here are some cheats and tips for the game Xenon 2.
Invincibility:
Begin game play and qualify for a high score entry. Enter
ARM as initials on the high score screen. Play again and
qualify for another high score that is lower than the previous
attempt. Enter OUR as initials on the high score screen.
Press the Reset button on the Genesis when demonstration mode
begins. Begin a new game with invincibility enabled.
Unlimited lives:
Begin game play and qualify for a high score entry. Enter
OLD as initials on the high score screen. Play again and
qualify for another high score that is lower than the previous
attempt. Enter AGE as initials on the high score screen.
Press the Reset button on the Genesis when demonstration mode
begins. Begin a new game with unlimited lives enabled.