What is the best game you played ever?

It was Counter Strike Global Offence This game my favorite :D Best game always!

Fallout series are the best ones in my opinion. So many choices and so many options to make your character unique!

MMORPG is best ever (Lineage 2, World Of Warcraft, etc)

To be honest, in my case Dota 2. I don't know why but I keep falling back to this game.