You've been patiently awaiting your crack at id Tech 4, the engine powering Doom 3, ever since id Software announced its intention to release the source code. Now, the wait is over! You can download it for yourself from GitHub right now.

And remember, id Tech 4 isn't obsolete just yet. A modified version of it will power Human Head's Prey 2 next year.

This article was originally published on Joystiq.

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