Marc Laidlaw is a games writer. Laidlaw has been working with Crowbar Collective, Valve Software and NVIDIA Lightspeed Studios. Laidlaw's first published game was Half-Life released in 1998. After that, Marc Laidlaw took part as the writer of Half-Life: Source. Afterwards, Marc Laidlaw worked on Half-Life Deathmatch: Source developed by Valve Software in 2006. Most recently, Marc Laidlaw was involved in the development of Black Mesa.