Super Cubes and Slip

From the back of the box:

Super Cubes is a computerised form of the popular cube puzzle in which the coloured faces of the jumbled cube must be restored to their original positions. You have the choice of playing with a 2x3, 3x3, or 4x4 cube, and you can opt for one of 9 levels of difficulty. Best of all, if you get in a tangle and cannot straighten it out yourself, you can start again from the beginning at the touch of a button: no need to go out and buy another puzzle!

You can compete against your friends by seeing who can reassemble the cube in the smallest number of moves -- the count is kept by the computer, of course.

Slip lets you compete against the computer or against a friend. The idea is to get the balls into the holes by tilting the maze. It sounds pretty easy, but just try one of the higher levels of difficulty!

Another way of competing in both games is to see who can complete the game the fastest, using the computer's stopwatch.