Not sure what the worst game I have purchased is. But as for the worst game I have heard of, I would like to nominate...
Cosmic Race:
When I was a kid I had a subscription to Game Players magazine, and they rated their games on a scale of Cosmic Race to 10.![]()
That was the first game I thought of. Zero collision detection, the vehicle would often travel right through obstacles or even through the ground at random. Totally buggy shit, it's amazing it made it to store shelves.
The N64 Superman game was an abomination. AVGN review.