Overview
What is OpenBlox? In a nutshell, OpenBlox lets you build games with Lego bricks, physics, and Lua. Soon, you'll be able to play your games with your friends across the Internet. OpenBlox came about as a FOSS alternative to the proprietary game ROBLOX, of which I used to be a pretty active player.
OpenBlox's code is licensed under the GPLv3+ (which will probably change to the AGPLv3+ as soon as OpenBlox gains networking ability), while the art assets are licensed under the CC-BY-SA 3.0 license. The bundled Lua scripts are under the Apache License 2.0.
Features
- Drag-and-drop scene editor, BloxWorks
- Bullet integration (formerly used ODE)
- Special effects: Shadows, audio, and particles (in Mercurial)
- Lua scripting
- "Write once, run anywhere" functionality - if you write your OpenBlox game on (for example) Linux, it will run on Windows, Linux, or Mac OSX without modification
Contributing
Currently, OpenBlox needs the following sorts/types of contributors:
- 3D artists
- 2D/texture artists
- Python programmers

Links
- OpenBlox's homepage: http://openblox.sourceforge.net.
- Download OpenBlox here: http://openblox.sourceforge.net/content/download-openblox.
- OpenBlox's wiki: http://openblox.tuxfamily.org.
- OpenBlox's issue tracker: http://tracker.openblox.tuxfamily.org.
- Complete screenshot gallery: https://sourceforge.net/project/screenshots.php?group_id=286783
- It's already been featured online in a few places too: http://openblox.sourceforge.net/content/openblox-featured-2-websites.
Screenshots
Making an OpenBlox game in BloxWorks:
First-person gameplay:
Lua tech demo: