|This article is about the Gearbox employee. For the Black Mesa scientist, see Armstrong.|
Matthew Armstrong is a writer, game developer, and director for Gearbox Software. With Randy Pitchford and Brian Hess, he co-wrote the story for Half-Life: Decay. He also designed levels for Half-Life: Blue Shift and Half-Life: Decay. With Gearbox, he was also a notable director on Borderlands.