OpenArena is a 3d game creation engine. It is a rendering system that can be used for more than just games but it is targeted at games. The basic use being create some game media textures models maps and config files for physics and rules.
License
Qt Public License (QPL), GNU General Public License version 2.0 (GPLv2)
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Additional Project Details
Intended Audience
Developers, End Users/Desktop
User Interface
X Window System (X11), Win32 (MS Windows), Project is a 3D engine, Project is a graphics toolkit
Programming Language
C#, C++, C