It's Time to Revisit the Games That Gave Rise to 'Halo'

See if this premise sounds familiar: You're a soldier aboard a far-flung space installation, forced into combat against a confederation of aliens, all centered on the same goal of apparently killing every human they find. As you fight, collecting a variety of weapons, you enjoy the aid of an artificial intelligence who is much, much more talkative than you are. You learn more about the aliens, work to fight off the attackers, and ultimately concern yourself and your unrealistic military prowess with trying to protect the human race however you can. In the broadest strokes, this sounds like Halo, right? The Marathon trilogy of first-person shooters was developed by the company at the earliest stages of its existence, with the first game coming out in 1994, just a year after Doom codified what first-person shooters would be.