It's not a bad idea, just depends on whether or not you have what you need to play it, and I'd hold off on making a decision now and wait till the game comes out, if you wait for a bit, the price might go down, or there might be a sale or discount, plus I don't think Nintendo makes games anymore for the DS lite, but if DS lite games are what you are looking for, then I guess you could go for it, but that's just my idea.