Mad Day Special is a free online racing and shooting game where you battle an alien invasion across two distinct gameplay phases — driving and on-foot combat. Behind the wheel of your truck, you blast through waves of extraterrestrials using a rocket launcher while climbing hills, smashing walls, and dodging laser fire. Once the ride ends, you jump out and finish the job with a shotgun, taking down aliens up close in fast-paced ground combat. The mission? Rescue your pet octopus, Fluffy. Yes, really.

The upgrade system is where Mad Day Special gets seriously addictive. Earn cash from kills and use it to beef up your car's engine, armor, guns, and even your character's clothing and gear. Better upgrades mean surviving longer runs, which means more cash, which means even stronger builds. Each run feels meaningfully different as your loadout improves. The dual-phase structure — car combat followed by on-foot shooting — keeps the gameplay fresh and stops things from feeling repetitive.

If you enjoy free online alien shooting games, 2D action racers, or WebGL games you can play instantly in your browser, Mad Day Special hits all those marks. It's a solid pick for fans of upgrade-based games, car battle games, and anyone who likes their racing mixed with chaotic combat. No download, no install — just pick your upgrades and start the fight.