Mad Scientist Defense combines action and tower defense gameplay. At the command of a blimp protect Dr. Altus while he is working by shooting monsters before they reach his lab. Deploy flying turrets to assist you in your task and upgrade your blimp to make sure you can Dr. Altus remains safe. Once you have beaten all 20 waves of monsters try the robots invasion mode which will prove a challenge even though your blimp has been specially upgraded.
Use the WASD keys to control the air balloon, use the mouse to aim and press the left mouse button to fire.