legend of dragoon was my hardest, most rpg's are pretty hard but the attack combos for that game took awhile to master.
Tetris
I never finished all lvls
Back in the day I rekon Resident Evil was hard.
The impossible game is soo hard!
I think the Hardest game I have played is either Contra or Pacman.
Splinter Cell was my hardest game which I ever played. I think Pandora Tomorrow or something. Vegas, I don't remembr.
lol theres a guide to the impossible game on the internet. but ya that was pretty hard b4 i cheated
Legend of Zelda : Ocarina of Time was difficult for me on the first run through.