Need to say that this game is worth checking out for the presentation alone. I have it for the 360 and am having none of the frame-rate issues reported in IGN's review which was conducted using the Xbox. This is what happens when games are built ground-up for the Wii U (See trolling about Batman, BLOPS, etc).
I know that many or most of you probably find Gilbert's games shallow compared to the Dark Souls and Skyrim's of the world (and they are), but I also know that I am not alone in enjoying kicking back with a j and some Deathspank or Costume Quest. And though I missed them, I know his old school games are lauded as his best work.
This guy has talent and is doing something new here. I played the Rayman demo right after and while it looked good, it looked like a game. The Cave looks like you're playing a beautiful cartoon. I can't wait to get into the gameplay with my girl tomorrow night. Will give more detailed gameplay impressions later but the jump mechanics seem fine to me so far.
Truly beautiful game.