The Source engine is a 3D game engine developed by Valve Corporation. Its unique features include a large degree of modularity and flexibility, an artist-driven, shader-based renderer, accurate lip sync and facial expression technology, and a powerful, efficient and completely network-enabled physics system.

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This engine has a lot of pros and cons. One one hand, it's very easy to get into and it can look pretty damn good in the right hands. But on the other hand, you got a 7 year old tool set with mostly command line tools that Valve breaks when ever they get bored. And depending on the version of Source you use(2006, 2007, 2009(no code), AlienSwarm, Portal2(no code)), you might get stuck with half working features(like shadow mapping in 2007).

The main pro is; the fact that it comes with an entire game(2006/2007).

Main con is; half working tools that love to crap out for no apparent reason.

If the tools were in decent shape, and if they would release more fully working(AS has no shader support) codebases. Then I would give it a 10/10 and wouldn't be in the process of learning the UDK.

Realy, I love this engine so much! Garry's mod and Portal series wouldn't be so good without this engine!

Amazing engine with lots of features, great visuals and shaders, very flexible, and works on almost all computers.



Really poorly updated, the Hammer Editor is the same as 1999 and the SDK have a lot of important bugs who are still not fixed. Most of the tools are made by the community and the other officials are extremly rudimentary....


For a 7 year old engine, still amazing graphics. Although It has been improved.

Who doesn't like source games? :P


Valve, as well as the Source engine, are completely outstanding!

Best engines!

Very good engine for mods and games.

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