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Eric Lengyel

Member Since 25 Nov 2003
Offline Last Active Today, 12:22 PM

Topics I've Started

C4 Engine Version 4.0 Released

16 October 2014 - 01:56 PM

Announcing the release of C4 Engine version 4.0 for Windows, Mac, and Linux. This is the largest and most important release ever made in the nine-year history of the C4 Engine, and it includes many major performance improvements, new features, and usability enhancements. The C4 Engine is widely regarded for its excellent architecture, its incredibly clean C++ source code, and its overall stability.


The C4 Engine can now be licensed for the extremely indie-friendly price of $88.00 per user. This is the lowest price we've ever offered, and it gets you the complete source code and a full year of free upgrades. You can use the engine to make as many games as you want, and there are never any royalties. The license to use the latest version of the engine you have never expires.

The C4 Engine also runs on the PlayStation 4, and we rewrote the PS4 rendering layer to be extremely close to the metal in version 4.0. If you're a PS4 developer, please contact me at lengyel@terathon.com for more information.


island2x.jpg    dungeon3x.jpg


water1x.jpg    cem2x.jpg


Reputation bonuses for specific qualifications

11 May 2012 - 08:00 PM

I'm glad to see a lot of effort being applied to making a good reputation system. Given that one of the reasons for having a reputation score is to provide some kind of measure of how reliable the information in someone's post is likely to be, I have a small suggestion. How about giving an extra reputation bonus to people who have certain concrete qualifications such as the following?

*) Works at a well-known game company.
*) Has an advanced degree in computer science or related field.
*) Is a published author in the field of game development.
*) Has won some kind of industry award, such as a prize in the IGF.
*) ... any other big indicator that someone knows what they're talking about.

The awards beneath someone's name used to show these kinds of things, but they seem to have disappeared, and they didn't affect reputation. The way things are now, an industry veteran working at Valve (for example) could make only a small number of posts on this site, and his reputation would show that the information he gave is no more reliable than someone who posts a lot, but has no industry experience and is currently enrolled in his first C programming class.

I'd like to see each member have the ability to apply for recognition of the above qualifications, somehow prove that he has satisfied them, and be able to receive significant reputation bonuses for each one cumulatively. Too many times, I've seen a lack of respect for highly-qualified industry game developers in this website, and I think a lot of it is due to the fact the people simply don't know who they're talking to.

C4 Engine is 50% off this weekend

25 November 2011 - 12:20 PM

Starting immediately and lasting until the end of the weekend, the standard edition of the C4 Engine is available for 50% off the regular price!


The standard edition includes full source code and comes with one year of free updates. This is a great chance to grab one of the most respected indie engines at a very low cost.

For more information, see the C4 Engine website.

C4 Engine now 50% off for all former Torque users!

11 November 2010 - 10:24 AM

In response to the announcement that the makers of the Torque engine product line are going out of business, Terathon Software is currently offering a 50% discount on C4 Engine licenses for any previous owner of any Torque engine license for a limited time. To take advantage of this discount, simply use the discount code TORQUE on the C4 Engine order page, and then send a copy of your original Torque license email to sales@terathon.com, with any sensitive information removed, so we can verify your eligibility.

Game Engine Gems proposals

29 July 2009 - 05:41 PM

There are still a few days left to submit proposals for articles to appear in the new book Game Engine Gems, published by Jones and Bartlett and edited by yours truly. Proposals can be submitted at the following website: http://www.gameenginegems.net/. We are looking for articles that pretty much have anything to do with game engine development or maintenance. Some example subject areas are rendering, scene organization, visibility determination, math, physics, collision detection, audio, AI, resource organization, user interface, and so on. Articles should generally be short and sweet, focus on a single problem, and present a solution that has been proven in the real world. Even a quick three-page article about a useful trick would be a perfect fit for the book. If you can't make the August 1 deadline (which is for proposals only, not full articles), go ahead and submit a few days late. We will still consider any submissions made before we have to make our final selections. Of course, all authors will receive royalties for their hard work!

Eric Lengyel
Series Editor, Game Engine Gems