The objective of Tornado Button Smashing is to make your tornado as large as possible and destroy everything you see.
Move Up: W or Up Arrow Key
Move Down: S or Down Arrow Key
Move Left: A or Left Arrow Key
Move Right: D or Right Arrow Key
Expand Tornado: Tap enter as fast as you can
You have to tap enter very quickly to make your tornado grow. Destroy as many buildings as possible within the time limit; some buildings will give you more time.