Build a gun out of parts in the editor and try testing it in either Singleplayer mini games or play with(or against)your friends in the multiplayer!
(this version doesnt work anymore because cloud server has been shut down) New release, now with cloud saving and player model! Changelog: -Added cloud...
Alpha 2 includes multiplayer now! however there arent any new features, except for some bug fixes. This is a 32bit version so it will work for everyone.