Snakeman

 CHEAT:
 In the main menu, press CAPS LOCK and then press "1"-"9" or "0"
 for the corresponding level ("0" = Level 10). A beep sounds as
 confirmation. Then start the game with "Play"!
 Note: There are 2 versions of the game, only one has the cheat mode.

 Freezer: 018584 = Lives