Pinball!

About

This cancelled pinball game was originally developed in 1978 by Ralph Baer for the Odyssey 2. It allowed players to build their own tables by positioning O-shaped bumpers onscreen.

Ralph Baer never completed it, but in 2000 he authorized the creation of 30 cartridges of the prototype, which were sold at Classic Gaming Expo 2000.

Source: IGDB