Creator of the Tombstone Engine (superseding the C4 Engine), author of Mathematics for 3D Game Programming & Computer Graphics, editor for the Game Engine Gems series.

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Terathon Software

Terathon Software

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Terathon Software is the company that develops the C4 Engine.

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Last Online
Oct 2 2015
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Latest tweets from @ericlengyel

Nov 15 2015

MS Word uses Ctrl-Wheel to zoom, and Illustrator uses Alt-Wheel to zoom. That works out great when you're switching between those two apps.

Nov 4 2015

@ID_AA_Carmack Don't do it! Make the ISVs fix their shit.

Oct 21 2015

Excel just told me it can't open two separate files with the same name in different directories at the same time. Somebody at MSFT is fired.

Oct 14 2015

RT @TombstoneEngine: It is now possible to acquire a license for the first release of the Tombstone Engine by supporting The 31st: https:/…

Oct 14 2015

@wtblife We just added a new reward for a license to the first release of the Tombstone Engine.

Oct 7 2015

If you'd like to fire this baby into the faces of a bunch of Halloween monsters, please support our Kickstarter!

Oct 6 2015

I'm getting more action on posts about Game Engine Gems 3 than I am on the Kickstarter for The 31st. C'mon, people!

Oct 5 2015

Game Engine Gems 3 has entered the editing phase now. It's shaping up to be a great book! Will be out on March 16 for GDC.

Oct 5 2015

RT @GaryAStott: New article! Trick or Treat: @The31stGame Haunts #Kickstarter #indiedev @EricLengyel #indiegames #horror #halloween http://

Oct 5 2015

RT @SeanBeeson: I just backed The 31st on @Kickstarter @The31stGame and so should you! This score is 10 years in the making!!