Spacewar is a two player networked game inspired by the original Spacewar! on PLATO. Two players control a spaceship each in a two dimensional representation of space. The ships can thrust, rotate, and fire and must try to destroy each other. The ships are represented by custom ASCII graphics. Unlike the original Spacewar!, here ships have only limited fuel and hyperspace jumps. Connected users are listed on screen (big board) and can be challenged to a duel.
Chess is a chess game on the CDC 6600 computer. The program was continuously iterated on and knew many versions which became progressively better. The game won the ACM North American Computer Chess Championships eight times and the second WCCC in Toronto in 1977.