Platinum Arts Sandbox Free 3D Game Maker is a free open source 3D Game Maker, world creator and 3D Game Design program currently being used in many schools throughout the world that allows kids and adults to create their own video games, worlds, levels, adventures and quests, even cooperatively! The goal is to make it accessible to kids but also powerful enough for full game projects. With a simple click and roll of a mouse wheel users can modify the world however they want. In the words of a nine year old Sandbox whiz I babysit for, “Press Edit and go fulfill your dreams!”. Now features new game modes such as sidescroller, machinima, kartmode, RPG, and more!
This engine is 100% free, 100% flexible and 100% simple. Providing you have the programming know-how, you can do ANYTHING! This engine is updated frequently and I myself have content included in the engine (Karbon Collection, NewUI, RPG HUD) ready for the 2.7 release. The developers (including myself) are almost always around in the IRC channel to help you out. (#sandbox, irc.oftc.net)
This sandbox game really isn't a game, but is in fact a key that unlocks your inner cunning and imagination. You could literally do almost anything within this game as long as you have patience. The engine runs smoothly, the scripting is phenomenal, and overall its free! Though I had some pet peeves that were disturbed while in game with this, The amount of great content overpowered the measly two things I found weird about this.
NOTE: I will not reveal these two problems due to the fact that it is more opinion based problems rather than stand problems that this game lacks