Today, we shall have something different than we are used to. The Powder Toy reminds a small chemist game, creating your own world and learning from various stuff.
You can do and make anything you wish here. Sand-box game as you never tried before. You have various elements, gasses, soil, explosive material, etc and you may do what you want. Create some kind of mechanism, make basic molecule changes or try new experiments. Machines, bombs, devices, all is possible and if you want you can share with other players as well.