What's the DS games you liked the least out of the ones you've played? Borrowed, Bought, or whatever, just list them here. I'll start:
1. Retro Atari Collection - yuck! What few games that aged well did not play well on the DS, and the remixes just sucked.
2. Magical Starsign - Just a really, really boring game. Very pretty, but very dull and uninspired with poor pacing and a lackluster story.
3. Professor Layton and the Curious Village - REALLY not my game.
4. Mario vs. Donkey Kong 2: March of the Minis - Tried really hard to like it, but I just couldn't get into it.
5. The World Ends With You - I'm too stubborn to put it on easy mode. I feel like I'm missing half the game, and I am NOT replaying an RPG.
Dishonorable Mention:
Dragon Quest Monsters Joker - I just can't get myself to play it.
Yoshi Touch 'n' Go - I spent how much on a minigame?!
For those reading my list, there's a reason I said "least favorite" instead of "worst."
With that in mind, what's your list?
I'm sure that the game is good, it's just a shame that I was cursed with a pirated copy; I feel sorry for all those who got victimized with the pirated version 
It's like manual mode in the Tales of Games: I feel like I should use it because it's there, but whenever I do use it, the game is frickin' impossible.