This is a liberated game: originally it was sold as shareware, but in 2005 author Mike Voss released the full version as a free download.
Ook bekend als Chain Reaction
Puzzle, 1995Shareware
Puzzle, 1993Freeware
Puzzle, 1992Shareware, Shareware
Puzzle, 1991Shareware
Puzzle, 1994Shareware (installed), Shareware
Puzzle, 1994Shareware
Puzzle, 1996Shareware (installed), Shareware
Ook bekend als BOB
Puzzle, 1995Full version