Mazer is a 1995 isometric shooter developed by American Laser Games for the 3DO console.  Our copy is a pirated version, not a genuine one.

Game Description:

'The Semag-Resal, a vicious alien race from the Nacirema system, have conquered and invaded the earth. In order to maintain their rule, they have established numerous military bases manned by combat drones. These bases secretly double as research facilities for the development of human cyborgs.

When completed, these cyborgs will be indistinguishable from normal humans so that they can be used to infiltrate and destroy any remaining pockets of resistance. Scattered bands of rebels are Earth's last hope of breaking Semag rule.

As one of the volunteers, your mission is to free the humans stored in stasis at each base and destroy the sentient "boss" robot. You are equipped with a bio-enhancer which increases your normal abilities, an energy shield, and your chosen weapon.'

Gameplay

If one player is in the middle of a game, a second player can join in by pressing the "start" button while the first player is playing one of the levels (i.e. not during the maze bonus round, level preview or display of level statistics). 

A small picture of one of the characters appears at the bottom corner of the screen. Cycle through the different characters using the thumbpad and hit a button to activate the displayed character.

If a player loses their last life on a level, the option to continue (restart at the beginning of the level) with a new character is given. In a two player game, the first player to lose all of their lives can press start during the level and select a new character but then must wait until the other player either finishes the level or loses all of their lives.

Information About American Laser Games: