DSi has camera functions, internet capabilities, and the addition of the DS store. however, its not much of a difference in terms of game play unless you're talking about ge
…tting a DSi XL which is basicly a DSi but larger screen and such. Otherwise gameplay isn't affected in anyway. If you are looking toward saving money, just get a ds but if you got the money to spend and want a bigger screen, more functions, get a DSi or DSi XL. Of course there is also the 3DS which is a "no glasses" 3D handheld but I don't it's worth it right now because it has no exclusive games on there at the moment. Here's an abridged version of what I said: DS-smaller, first model, cheaper, plays DS games DSi-slightly larger, bit more expensive, plays DS games DSI XL- Much larger, Bit more expensive, Plays DS games 3DS- DSi size, very expensive, plays DS and 3DS games (barely any 3DS games currently out thought) (MORE) 
