19. Valve Part 3: The Trouble with Sequels (2009)

From Half-Life to Left 4 Dead 2, Valve has been one of the trailblazers in the video game industry. In this third episode of our retrospective, watch and see how Half-Life's popularity led to an incredibly rocky development cycle, fraught with a lawsuit and one of the biggest hacks in gaming history.

Release date: 2009-11-12