Every once in a while, you look forward to a game, and then realize when you start playing it that it just isn't any good. That was the case for me and Drawn to LIfe once I got past the character and platform creation. Do you have a most-dissapointing DS game?

I was really let down by FFXII Revenant Wings. I was expecting more out of it. Biggest waste of money was Altairs Chronicles though. 

I have many games that disappointed me, but I usually bought them very cheap and wasn't expecting a whole lot.

probably Henry Hatsworth

I dont have a lot of DS games but I have never really been let down by one yet.

Like Meowayne I'm gonna have to say Advance Wars: Dark Conflict. It's not that the game was bad, in fact it was very good and I'd recommend it to anyone with a DS but for me personally Advance Wars: Dual Strike was one of the best strategy games I'd ever played and I'd been really hyped for Dark Conflict for a while, expecting the next installment in the series to be what was probably much bigger and better than was reasonable. I was kinda disappointed that Dark Conflict didn't live up to my over-the-top expectations, still I don't regret buying it.