Dr.Quatro is a wellknown masterbrain. Can you beat him in this version of 4-on-a-row?
Just pick up your blue mini-balls and position them in the field. Try to get 4-on-a-row before Dr. Quatro does!
A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.