Played this for a few hours last night. Had to force myself to stop to go to bed. Had to resist playing before going to work. Don't recall the last time any game was so compelling oh god.
Also, my GF played for a little while, and oh wow... she can't run! She walks through the game, because she can't run while jumping! She never plays games, and I wasn't quite prepared for how difficult a platform game would be for someone that hasn't played anything in over 20 years. But she loves the cat suit.
I also love that she's willing to try playing it, and the only reason she doesn't want to play it is that she's worried that people will make fun of her for sucking at it.