Hardest game you have played?

The first Mass Effect on veteran mode. Took me a few hours to kill Saren and I hated that bastard. The combat with the krogan was also more than challenging.

Lego star wars

Quake III Arena fighting against Major or Xaero on nightmare difficulty :p

i think it should be Hitman: Absolution

QWOP

Devil May Cry 4 on Heaven or Hell(or other, i forgot) difficulty

In my opinion, the hardest game for me was Super Mario Bros. For some reason, I just couldn't get fully used to the controls and it took me forever to beat it.

I do see people not believing them when I say I beat Contra without the code. Oddly enough, I didn't find that game nearly as hard as people say it is.