Worst game? Good gosh there is so many that failed to show its true potential. I think Sonic the Hedgehog for the Xbox 360 was absolutely horrible. Turok for the 360 was also bad. Two worlds? DONT EVEN GET ME STARTED ON THE BULLCRAP GAME!!! Soul Calibur III For PS2 in my opinion was bad even the Remake of Rygar was a pile of crap. Sonic Riders was horrible for gamecube, Timesplitters 2 was even the worst for me for GC. PlayStation? Almost every game was horrible camera angles. The game that pissed me off the most was Digimon Digital World and Incredible Crisis.(WHAT THE F@$%?) Shaq Fu was a pile of crap on a brick (genesis), and Ghost Busters for NES was Dead in a box. There is so many to choose from.
I can go on the biggest rant in history about every system and every game. Only one I can't do is PS3 (don't have one)
So many games are piles of S&$%