If You Had To Recommend One iPad Game, What Would It Be?

I'm off on holiday later today, I've got a long flight and a fair bit of travelling to look forward to and it got me to thinking; If you had to recommend just one iPad game, what would it be?

I'll kick things off with Game Dev Story. Sure, it's an iPhone game not an iPad game and it may not be for everyone but I believe once you get into it it's hard to put down, as are most Kairosoft games!