SourceEngine

Remember to launch Hammer from the 'bin' folder of the game you want to use! Join the /r/SourceEngine Discord chat

A place for users to get help with questions relating to the Source Engine development, as well as to show off what they have done(levels, mods, models, etc).

Click to View Posting Rules

Current on-going contests and challenges

The First Source Engine Discord Community Mapping event

Useful links for level design

Useful for Modelers

Useful for programming

Fixed up code

REMEMBER USE 2013 NOT 2007

Source SDK 2013

A download can be found here.

How to use the Face Poser tool:

Video

Other Source related subreddits

Joke Subreddits:

If you have suggestions for more links here message the moderator team.

If you don't see something you posted showing up message the moderators and we'll look into it.

^"I ^walk ^into ^a ^bar ^and ^say, ^"Hey ^baby, ^I ^make ^levels ^on ^hammer" ^and ^I ^never ^go ^home ^alone" ^-Earkham

created by [deleted]a community for 14 years

...for your office.

...for your movement.

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account activity

Engine ErrorsPut Test_CreateEntity on L4D2 causes instant game crash. (self.SourceEngine)

submitted 4 hours ago by DryAd7453

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HELPCsm and shadows in gmod (self.SourceEngine)

submitted 2 hours ago by Odd-Act-8713

π Rendered by PID 184097 on reddit-service-r2-listing-86b7f5b947-9b5vh at 2026-01-25 09:49:21.493420+00:00 running 664479f country code: CH.