Experience the thrill of top-down shooting in Grandpa's Minigun, a free online game where you must battle an army of demons that have escaped from hell. The world is overrun with these terrifying creatures, but you have a secret weapon - your grandfather's old, but trusty minigun. Equipped with a multi-barreled machine gun, you have the power to rain down bullets and take out as many demons as possible. But be careful, you only have a limited supply of band-aids to heal yourself with, so avoid getting hurt at all costs. Take control of your character using the arrow keys or WASD keys, and use the space bar to shoot. Can you save the world from the demonic invasion? Play Grandpa's Minigun now on Greatmathgame.com and find out!