All images via the AtariAge website
Snow White is not usually the first film that comes to mind when one thinks of video game spin offs. Yet back in 2002 at the Classic Gaming Expo in Las Vegas, Atari unveiled a number of games for their 2600 system. Showing up among the titles was an older "Snow White and the Seven Dwarfs" prototype from 1982.
This unreleased prototype was developed by Atari, using the licensed Disney Snow White property. The proto was about 50% complete...
so it's not terribly enjoyable as a game, but interesting from a historical perspective. A version of this game with box, manual, and cartridge was sold at the 2002 Classic Gaming Expo. Source: AtariAge
At atariprotos.com, you can see details of the game designed by programmer Greg Easter.
The first couple pages (below) from the user's manual explaining how "Snow White needs your help!"