OpenBlox is a game development kit similar to ROBLOX and Blockland
Software Santa thanks DangerOnTheRanger at gameboom for posting this game! A tip of Software Santa's Santa Cap to him!What is OpenBlox?
In a nutshell, OpenBlox lets you build games with Lego bricks, physics, and a scripting language called Lua. Soon, you'll be able to play your games with your friends across the Internet.
How much does OpenBlox cost?
Nothing. You can download and play OpenBlox at absolutely no charge.
Simple game development
Make games easily with OpenBlox's drag-and-drop game builder, BloxWorks
Cross-platform compatibility
Write your game on Windows, Linux, or Mac OSX (possibly BSD); play it on the other two
Easy installation
OpenBlox comes with a graphical installer - one-click installation
Free as in freedom (and price)
You're free to download OpenBlox, modify it, and share it with whoever you want
Powerful scripting system
OpenBlox supports the Lua (lua.org) scripting language to make its games interactive
Several well-known, game-related users of Lua include World of Warcraft, FarCry, Garry's Mod, Spring RTS, and Warhammer Online
http://sourceforge.net/projects/openblox/