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Possible Worlds is an openGL-accelerated 3D game that was created in the course of a Computer Graphics lab exercise  at the Technical University of Vienna. It won the competition for the best game hands down and we originally intended to develop Possible Worlds even further with a network-multiplayer mode, more visual FX, etc.. Unfortunately, neither of us could be very much bothered to work on it any more in the Summer holidays, probably because we were a bit burned out by the great amount of work that was necessary to create this game in less than four months. Once university started again in October 2001, we again had a lot of things to do at university and could not get around to enhance Possible  orlds, so we decided we'd finally open-source our work without all the enhancements we'd planned.

We regret the development stop but we think the sourcecode might still be of interest for quite a few people, although it might not be beautifully written at times ;) That said, I still intend to do small updates on Possible Worlds, I'd still love to see the caustics effect in action and I think the cockpit could use some enhanced HUD too... and MORE MISSIONS!
A lot of people have emailed us about implementing Joystick or mouse support or other minor changes. Now that Possible Worlds is open source, just grab the SDL-docs and this should be a matter of a few minutes. I don't like PC joysticks much (they're crap for racing games) and I haven't got one, that's why joy support wasn't in the game all along.

Actually, I'm starting to think about my next project which will most likely be some kind of a fast 3D multiplayer game incorporating sheep and a mechanical wolf. I think it should look like 42 (an openGL-screensaver i programmed for another lab exercise at university a couple of months ago, it won the competition for best screensaver ,see screenshots below :) I've already decided on a name for it, now all I need is an idea for the gameplay and LOTS of time.... ;) and yes, it will definitely run on Linux!

Perfect Motion
Perfect Motion
Perfect Motion
Perfect Motion

Finally, we want to thank you for playing our creation and hope you have as much fun playing the game or browsing the source as we had writing it. We received quite a lot of feedback and rave reviews at various gaming sites that made the whole thing worth it!




Possible Worlds by Gerwin Sturm & Eike Umlauf
Released under the terms of the GNU Public License
all Source Code, Ideas, Graphics, 3D Shapes and Sound by Gerwin Sturm & Eike Umlauf


The Abyss Motion Picture (C) 20th Century Fox
Descent2 (C) Parallax / Interplay
Touring Cars Championship 2 (C) Codemasters
Some Amiga games (C) Various
Whale Cries somewhere off the web

Title Music
Utah Saints - What can You do for me (Salt Lake Mix)

Intro Music
Chris Huelsbeck - Turrican2 Title Theme (Tracked by unknown)

Outro Music
Chris Huelsbeck - Turrican Credits (from

Credits Music
Chris Huelsbeck - Apidya Credits (from

Briefing Music
Unknown - Human Target

Pong! Music
Mahoney & Kaktus - Wasserfast (The Protracker creators themselves!)

re-tracked and digitally remastered by Eikzilla

I'd like to point out that Chris Huelsbeck's Tracks are NOT used with permission, but since all tracks are freely available on the net and this is non-profital use of his material, I hope we won't have his lawyers bashing our doors down ;)