From the primitive First Person genre debuts; into a real, rule breaker, massive game. I'm pretty sure that Valve never thought this would change everything through history of PC gaming, but it did. It did just by its own way; making players' lives halved.

From the primitive First Person genre debuts; into a real, rule breaker, massive game. I'm pretty sure that Valve never thought this would change everything through history of PC gaming, but it did. It did just by its own way; making players' lives halved.