Lose Your Marbles
From Sega Retro
Lose Your Marbles is a puzzle game developed by SegaSoft and published by Sega for Windows-based computers. It was also re-released as part of Sega PC Puzzle Pack.
The idea of the game is to line up three marbles of the same color within the black square. Doing so would add extra marbles to the opponent's play area. When there is no longer any space for marbles, the player loses.
The game claimed to be "better than Tetris or your money back".