Log! Cal (or Logical) is a puzzle game with arcade elements. The game was released by Rainbow Arts in 1991. At Log! Cal, you can play on C64, Amiga, Atari ST and PC.

The object of the game is to arrange in the correct way (pattern) the colored balls. To accomplish this task, you have a rim that allows you to rotate and stack balls. The task is simple, but it is not. The first stage may be a serious challenge for some.

There are 100 levels (boards) available. The authors, however, have an editor, thanks to which we can create their own boards, so that the game can be played for a very long time.