Codebreaker (1978)

My Save State is where you keep a diary of the games you play.

You can't play Codebreaker here, but you can log it, rate it, and see what other players think.

This one's not for stupid people. The goal of codebreaker is to guess a 3 or 4 digit number in 12 tries. The computer lets you know when your on the right track with some vague clues. In the second game, NIM, you and your opponent strategically remove blocks in an attempt to be the one to remove the last block.