Remove blocks from a tower, and carefully stack them on top. Stack it as high as you can without knocking it over.
Play by yourself or with friends and see how many blocks you can stack!
Alternatively, if you enjoy frustrating other people, place your blocks in a tricky way, so it's harder for your friends to build on top of them.

For local multiplayer, one player should use the mouse and keyboard, while the other uses a gamepad.