All time fave is Counter Strike

Diablo Series, Nox, anything isometric

World of Warcraft really started the revolution of MMORPGs

I'm pumped for WoW Classic

The Witcher III

Grand Theft Auto

i m so happy that i see Bioshock on this list!

i play almost all the FPS but noone gives me more fun than Bioshock did (the first two)

Definitely for me it's World Of Warcraft. It was a big part of my young adult life and became quite good at it. I was a top 20 world player at my class during WOTLK x-pac. Good times.

Battlefield 2 is the best PC game of all time for me.

Uh this is a loaded question. There so many different types of games so ill mention some of my favorite games. The best hack and slash game that I still play sometimes is Severance - Blade of Darkness, I always liked games with melee fighting and this one is the best. Also played Path of Exile a lot successor to Diablo 2 very in depth and complex arpg that keeps growing with interesting fighting mechanics and trading system which needs to improve but is still very vital part of them game. When it comes to surviving, crafting and post apocalypse Fallout 3 and Fallout New Vegas are my favorite not only due to overall feeling and atmosphere but also because of numerous mods that keep the games challenging and refreshing. I am also a big fan of sim racing and tested multiple games. Live for Speed is great sim that I got into very late when it was already dieing out, but drift still feels amazing in that game where you can control the car right on the edge. When it comes to rally sim there is nothing better then Richard Burns Rally. Currently playing Sid Meier's Civilization V with vox populi(balance mods) one of the best turn base strategy in my opinion.

Some of my favorite games list:
Severance - Blade of Darkness
Path of Exile
Fallout 3 and Fallout New Vegas
Live for Speed
Richard Burns Rally
Sid Meier's Civilization V