Battle Chess (Atari ST, 1989)
Box art suggests: Chess with the most beautifully-realised graphics you've ever seen. And the queen is hot.
The reality: Well... it wasn't awful. It was, however, extremely slow. Animations had to load and then played out for what seemed like an eternity. They looked good for the time, but it's hard to be as dramatic and naturalistisc as the cover art when you have to load a second disc just for the animations.
Above: The king looks ancient. If that's the queen... well, he's done well for himself