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Source SDK is a software development kit compiled by Valve Software that is used to create maps or mods for the Source Engine. It contains the very popular Hammer which is used to create maps for Half-Life 2, Portal, Portal 2, Counter-Strike: Source, Day Of Defeat: Source, Alien Swarm, Dark Messiah Might And Magic, ... This program is the very beginning of Dear Esther.

Utilities Edit

Source SDK has 3 utilities which are the essentials to create maps or mods:

    • Used to create Maps.
  • Model Viewer
    • Used to view models. (Also custom models)
  • Face Poser
    • Used to access facial animations and choreography systems (For characters).

Version history Edit

Source SDK has 3 engine versions:

  • Source SDK 2007
  • Source SDK 2009
  • Source SDK MP

All multiplayer versions of Source are now updated to the MP version.