Prototype for Atari 2600.
If you were around in the early 80's, you'll undoubtedly remember the robot craze. From Transformer to Gobots to Tranzor Z, giant robots were in and just about everything else was out. Atari 2600/8-bit programming veteran Rob Fulop saw the potential of this robot craze to make a great video game and set out to make the ultimate robot game for the Atari 2600.
Rather than make the obligatory giant robot shooter (as was the current style in Japanese video games), Rob decided to take a different route. Instead, Rob created a unique puzzle featuring a peaceful programmable robot whose only goal in life was to find his cheese. Because we all know that if there's one thing all robots want in this world, it's cheese!