Here's a short list i've compiled of all of the games I have for the Nintendo DS and what I don't like about them. If you've played any of these games then you probably know what i'm talking about.

Scribblenauts - Maxwell running off of cliffs and driving helicopters into water when you tell him to move two feet from his current location

Kingdom Hearts 358/2 Days - Having a fight cause more heartless nearby to spawn...and Sïax

The Ace Attorney series (Phoenix Wright and Apollo Justice) - When you present the right piece of evidence but Phoenix/Apollo start on a completely different point than what you intended

Elite Beat Agents - Spinners -_-

Final Fantasy Tactics A2 - When CPU controlled allies make really stupid decisions

Mario Cart DS - When the person in second place somehow gets a hold of a blue shell and nails you with it at the last possible second

Osu! Tatake! Ouendan! and it's sequel (Japanese version of EBA) - Spinners...again

Pokemon Mystery Dungeon - Having to fight Groundon at level 12

Nintendogs - When your dog is hellbent on eating the garbage during a walk no matter how many times you pull it away

Pokemon Platinum Edition - The fog battle field status

Trauma Center Under the Knife series - Aneurysms, the Triti strain of GUILT, and my sutures not being recognized because i'm left handed

The World Ends With You - Trying to activate one pin and another ends up activating...and Joshua