SDL Framework (SDLFW)
SDLFW is a cross-platform framework from the powerful SDL library to create your own 2Dgames with the Lua programming language.
It's easy-to-use, free, open-source, and works on Windows and Linux.
CorEngine is a work in progress, OpenGL graphics powered 3D game engine designed to help independent game developers with quick prototyping and game/virtual environment creation.
The engine supports a standard set of features, like skeletal animation, post processing, Lua/C programming, physics powered by Bullet Physics, GUI and 2D/3D Audio.
NyuFX is an advanced tool for creating karaoke effects in subtitle format ASS.
With the power of scripting language Lua with an extended environment + an user interface it's easy to create fancy 2D effects.
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Geographic restrictions, eligibility, and terms apply.
Make sure to visit the Home Page: (http://enigmaeditor.sourceforge.net/)
Enigma Game Level Editor (Egle) is a project to create a level editor for the Enigma game
(http://www.nongnu.org/enigma/about.html).
Enigma Game Level Editor is made in the Java programming language using the NetBeans IDE.