XOR

Xor is a 2-player strategy game for the TRS-80.

Gameplay is divided into 4 boards, one for each player, one for the computer, and one open board. Each board is a 2 x 2 square, and each turn a block filling 2 - 3 squares appears for that player. The piece can either be added onto their own board or given to an opponent. If the player fills all 4 squares they receive a point, but if there are overlapping blocks, they are erased, and the player doesn't receive a point. A player cannot give 2 pieces in a row. Turns are timed, and If neither player gives or takes, the computer receives the piece. The computer pieces do not get erased if they overlap, allowing the computer to more easily run up a score. The first player to reach 20 points is the victor. There are 3 skill levels.