Another genre that might work in 1D is the sports simulation. Thanks to the graphic limitations it is not really important wether or not it is considered to be handball, soccer or (and I like this idea) Speedball (as in the Bitmap Brothers game for Amiga).

Anyway. The Concept is that there are two goals (five pixels wide, green at the beginning of the game). Each team consists of two memers: a field player and a goal keeper. The keepers are auto-controlled and stay close to the goals. The other players can run left or right. Running with ball is slower than without.

I am working out the possibilities to shoot and to tackle the enemy player. It might be possible to lift the ball over the other keeper. But this game is a complex one and it might need another night or two.