Mazer is a 3DO video game where players select from four soldiers aiming to liberate Earth from the alien Semag-Resal. This alien race has established bases worldwide and created advanced cyborgs that imitate humans to infiltrate and eliminate rebel forces. Players navigate various environments, overcoming challenges to thwart the aliens and restore freedom.
In Mazer, the player can choose from one of four soldiers tasked with freeing Earth from the oppressive rule of an alien race known as the Semag-Resal, who have a network of bases located all over Earth. To make matters worse, they have developed cyborgs that can perfectly mimic human beings that can infiltrate their rebel hideouts and exterminate them.