This is the only known copy of Turbo for the Atari 2600.
It is estimated that this version is about 70%
complete. while the game is fully playable (with patience),
it still needs a lot of difficulty adjustment and some refinement
before it could be considered ready for production.
Pictured on the right is a very rare pre-production cartridge
case used for marketing purposes. It is believed that the
final label would have looked exactly like this.