Which was your hardest-challenging fps??

Quake 3 Xaero on his map on nightmare mode... yeah I really loved that map. I could beat any other bot/map combination on nightmare, but Xaero got me frustrated well into playing Clanbase matches... :D

Any unreal tournament against godlike bots (or pro players), and then serious sam hd (invisible enemies on higest difficult), quake 3 and painkiller...

Counter Strike 1.6 on ESEA, I cried, hard.

Red Orchestra Osfront and Stalingrad, difficult as fck.

Its a close call between Cs and Tribes. When vs pros, its a depression fiesta.

Call of Duty 4 was rough on veteran difficulty. Especially the airplane mission at the end. I still have nightmares about it.

Serious Sam games

couldnt play the game on hard so playing it on normal -,-