iPod seems to be frozen-need help

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Ok- last night I was playing a game of Monopoly on my iPod before I went to sleep (it helps me relax). I won the game and then my iPod screen froze- and right now all it says is you have won! on the screen. And it has been this way since last night when I finished playing. I really need my iPod to work because I am going on a long trip soon and I need something to do on the plane ride. Is there any way to unfreeze and iPod and any help you can give me? Thanks in advance