The Custom Tower is a tower that can be only used in Sandbox Mode, unlike other towers. But what this thing actually does is... up to you! It costs nothing. When clicked, the Customize Menu shows up. In it, you can type (in numbers) what the tower stats will be! Like 99/0 Pop Power, 1px range or even 1000 shoots each second (may cause lag)! You can also set what it can shoot, like Sunrays (ToTMG) or Dragon's Breath!