Three episodic sequels were planned for Half-Life 2. Leaked concept art from a Half-Life title The game was developed over a period of five years. Half-Life 2 was released in 2004, and continued the story of Gordon Freeman. Half-Life influenced first person shooters that came after it, won a number of Game of the Year awards, and is considered one of the greatest games of all time. The game did away with cut-scenes, and provided an immersive experience as if players were really living the game as the protagonist, Gordon Freeman. Half-Life was the first game by Valve, released in 1998. DOTA2, Counter Strike and Team Fortress top the play time charts. Portal, Half-Life, Defense of the Ancients 2 ( DOTA 2), Left 4 Dead, Counter Strike and Team Fortress were all successful titles with a large fan following.

Valve has a stellar list of video game titles. Valve owns Steam, a digital distribution platform for video games, has introduced Steam OS, a gaming oriented operating system and a virtual reality hardware platform known as Steam VR that it has opened up to third parties. Valve has introduced disruptive technologies in the gaming space.