Aliens vs. Predator 2 = worst game I purchased so I'm glad I got it on a major sale for $10 so it wasnt a total loss. You would think a sequel would have similar gameplay to the first, and improve graphics ect. AVP2 has similar graphics but the funniest and albiet worst player models Ive seen. They completely ruined the Alien play, which was my favorite. Instead of levels with plenty of places to hide, climb, sneak and do your Alien thing, they made the Alien levels a confined corridor where climbing on the wall resulted in death and you had to rush people and hope not to die. Probably played a few levels on each side, quit, came back the next day to see if it was still crappy, still is.

Other bad games would be Ace Combat 3, a crappy version of Ace Combat 2, one of my favorite PSX games of all time.

Metal Gear Solid, I figured that if the rental store had 10 copies of it it might be worth renting. Was cool at beginning, then it boiled into a wierd ass game. My favorite was Solid Snake (uncool name btw) and his constant wasting of my playing time by hiting on the numerous talking heads on his radio before getting to the damn point 10 minutes later so i could continue. Also the fact you have 20ish weapons but using anything but your pistol makes the base go apeshit and spawn infinite guards who dont stop. The hardest part was the first boss who isnt hard at all.

Lets see, Top Gun for GC was crappy, glad I rented it, made my two friends who are Top Gun fanatics quite disappointed to play it.

That Yakuza mission game for X-box sucked hard, sorry Pigflipper for suggesting you buy it, hope you saved your receipt.

There are more games out there, but those are the ones i can remember that wasted my time.