Tommy's Nite Lites! is a single player DOS Puzzle game released as shareware. The game takes place on a grid measuring six squares by six. A number of the squares in the grid are shaded. The object of the game is to clear all the squares on the grid in the fewest possible moves. The player does this by selecting cells within the grid. This causes the cell, and all cells diagonally adjacent to it to change from shaded to unshaded or vice versa. The player starts with 10,000 points and loses a point for every move made. The game can be saved and restarted. The full game has nine levels of difficulty, the shareware release contains levels 1 & 2 only.