Valve created the Half-life and Half-life 2 game engine. Valve is a corporation not a game engine.
The source Game engine was debuted in June 2004 and was created by Valve Corporation. It is a 3 dimensional game engine and has been accredited as being the most flexible gaming software of all time.
Spring - game engine - was created in 2006.
Jade - game engine - was created in 2003.
A game created by valve and released a few years back. It runs on the source engine wich is also used for the popular game Counter-Strike:Source.
Rockstar Advanced Game Engine was created in 2006.
Portal is a single-player Puzzle-Platformer developed by Valve Corporation.Developer: Valve CorporationPublishers: Valve Corporation, Microsoft Game StudiosDistributors: Electronic Arts, SteamComposers: Kelly Bailey, Mike Morasky , Jonathan CoultonSeries: Half-LifeEngine: Source (Source is a 3D game engine developed by Valve Corporation)If your asking if it runs the Source engine here is your answer.
no because garrys mod requires that you have a game that uses the source engine
The co creators of CS were Minh "Gooseman" Le and Jess "Cliffe" Cliffe. It was originally a free mod developed from the HL engine. Valve bought them out later on.
PCV stands for Positive Crankcase Ventilation, is a valve that releases air by turbulance created inside the engine when the crankshaft and piston are turning while engine is running.
It is a proprietary engine that Blizzard created.
1.6 16 Valve engine
16 valve