Zoo Keeper © 1984 Atari, Incorporated.
Zoo Keeper was to be a SARA SuperChip cartridge. According to programmer Christopher Omarzu, this game was 90% complete. Sound designer Robert Vieira believes Omarzu got over the most difficult hurdle: making the animals move up, down, sideways, and upside-down as they ran around the cage. As far as he can remember, the game was never finished before Atari killed it off in early 1984. Vieira made his sound code available to the community and a binary was created that plays 18 different sound effects and pieces of music. Graphics artist Courtney Granner provided some footage of his character sprite animations. No other material have been found to date.
Game's ROM.