I love Space Giraffe dearly.  It is one of my favorite pick-up-and-play games period.  My issue is that it has been acting up occasionally.  From time to time the game will lose its sound completely, and if I try to quit to the Dash, the system locks up and I have to power it down.  It's the only game giving me problems.

That sounds like really odd behavior. I haven't heard of, or experienced, that sort of problem with this game. Maybe you could try deleting the game and then redownload it.

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合言葉はLove and Peace！？