Least favorite game / Worst Game i've ever played...played a lot of video games so i thought i'll narrow it down by system.
N64- Superman 64 (not crazy enough to own this game, played it twice with a friend, immediately recognized how terrible it was), some rugrats game. forgot the exact title, don't care to remember it or NFL Blitz.
Gamecube- DBZ: Sagas
PS2: Probably least favorite game from the PS2 was Budokai 2, but i still liked it.
Gameboy: Legend of the River King. Basically, it's a fishing simulator. It's a damn good one, but not a very fun game imo.
Gameboy Advanced: Star Wars Episode II: Attack of the Clones. Despite how bad the game is, i still think it's better than the actual movie. God that was a trial.
DS/3DS- None. I regret none of my DS games i've gotten.
Xbox 360: Modern Warfare 3. Honest to god the worst shooter i've ever played. Beat the campaign (the only redeeming quality of the game) and suffered through a day of multiplayer before i returned it. I regret making that purchase. so. much. regret.
Wii: Pokemon Battle Revolution. I tried so hard to like this game. I really did. Don't get me wrong, i was great at it, having completed it in its entirety, but man oh man...pokemon games outside of the handheld market just haven't been as good since Stadium I and II. Colosseum was good, but i think that was the last great pokemon game on a big platform.
PS4: TBD, COD: Ghosts atm, but does it really count considering it was first on the last generation of platforms? I honestly don't know why i continue to punish myself by buying COD games. Either i'm a masochist or i have way too much time on my hands.