Use the arrow keys to move the ball, and press the Space bar to "mark" to matching tiles when they are next to each other. Press M to lock on the current tile and move it around.
Puzzle, 1986Freeware
Also known as Chain Reaction
Puzzle, 1995Shareware
Puzzle, 1992Shareware, Shareware
Puzzle, 1991Shareware
Puzzle, 1993Freeware
Puzzle, 1995Shareware (installed), Shareware
Puzzle, 1994Shareware (installed), Shareware
Puzzle, 1994Shareware
Puzzle, 1996Shareware (installed), Shareware
Puzzle, 1993Shareware (installed), Shareware