I wouldn't say angry -just annoyed. Keeps me from wanting a new iPod. I love my sudoku. They will release compatible versions, but does that mean you have to buy it again?
While I'm here -do iPod games synchronise? Like if I had two iPods, will scores and files be synchronised between the two?
I just bought the iPod Classic yesterday and used a $25 iTunes card to buy 4 games and none of them work. I really hope that I don't have to buy them again.