Mini games using Meks. These use some art assets from megamek (http://megamek.info/) and therefore these games are also licensed under the GPL (http://www.gnu.org/licenses/licenses.html).
To play the games visit the game's page: http://minimek.sourceforge.net
The newest game is called "RogueMek". It is a Rogue-like adaptation of the Battletech board game. In it you choose your mech then battle it out against multiple enemy mechs. The beta release video can be watched here:...