Sierra Entertainment
Sierra Entertainment, Inc. (formerly On-Line Systems and Sierra On-Line, Inc.) was an American video game developer and publisher. The company was founded in 1979 by Ken and Roberta Williams, and known for pioneering the graphic adventure game genre including the first such game, Roberta's Mystery House. The company is known for its graphical adventure game series King's Quest, Space Quest, Police Quest, Gabriel Knight, Leisure Suit Larry, and Quest for Glory.

Half-Life 2

Warcraft III: Reign of Chaos

F.E.A.R.

Half-Life

Warcraft III: The Frozen Throne

King's Quest: Chapter 1 - A Knight to Remember

Crash of the Titans

TimeShift

F.E.A.R. Perseus Mandate

Counter-Strike: Condition Zero

Crash: Mind Over Mutant

World in Conflict

SWAT 4

King's Quest: Chapter 2 - A Rubble Without a Cause

The Chronicles of Riddick: Escape from Butcher Bay

King's Quest: Chapter 4 - Snow Place Like Home

King's Quest: Chapter 3 - Once Upon A Climb

Crash Twinsanity

The Legend of Spyro: Dawn of the Dragon

Scarface: The World Is Yours

Shiftlings

Robert Ludlum's The Bourne Conspiracy

Half-Life: Opposing Force
