You are building everything up from bricks, with many types and colors available to you. If you register, you can share your creations with other players. Aside from building, there is also destruction.
When you are finished with your creations, you have a multitude of tools available to you, with all of these making the destruction of your creation possible.
For instance, there is a canon, a rocket, an earthquake, TNT and much more. You can also share your creations among friends and destroy their creations as well. So come on, lets play!