Unlock all levels: enter RHOMBUS as a password to unlock all levels, including the secrets ones.
Skip level: start the machine normally, then press V and you will complete the level.
Description by MobyGames
Also known as Heartlight PC
Puzzle, 1994Full version (installed), Full version
Puzzle, 1994Shareware (installed), Shareware
Puzzle, 1996Shareware (installed), Shareware
Puzzle, 1991Freeware (installed), Freeware
Puzzle, 1992Shareware, Shareware
Also known as TIM
Puzzle, 1993Playable demo
Also known as Oxyd 2
Puzzle, 1995Shareware (installed), Shareware, Patch, Patch
Also known as Xmas Lemmings 1991
Puzzle, 1991Playable demo (installed), Playable demo
Puzzle, 1997Full version (installed), Full version