That mine cart thread QOF did gave me the idea to make this thread. Cats may not be as prominent in video games as say, mine carts, but there are a lot of them out there.
So, what games have cats in them? Either as a playable character or background or whatever.
Here's a few to get things started:
Katamari Damacy - I'll give you one guess as to what you can do with them.
Chrono Trigger - In Chrono's house and the Millenium Fair.
Claymates - In this SNES platformer, you play a clay ball that can morph into different animals, including a cat. Speaking of that...
Clayfighter - Before a fight you'd see the cat from Claymates (or one of the other animals) scroll by on the screen.