Virtua Racing (Mega Drive, 1994)
Box art suggests: Detailed, glorious 3D racing - this is like the 180,000 polygons a second of the Model 1 arcade stunner in your house.
The reality: 500 polygons a second, maximum. For the entire game. It was still great for the humble Mega Drive/Genesis and we played it to death, but we do remember picking up the box and looking from it, to the screen and back again and wondering why the two looked so different.
Above: Love the arcade version? Buy this. Look, it's sort of the same...