Marathon

Released on December 21, 1994. The game was released as freeware.

Marathon is the first FPS released to incorporate a number of features, such as the ability to look and aim up and down, rooms over rooms (though no true bridges), dual-trigger weapons, 4-D space, health recharges which were fixed into walls and activated rather than picked up, 8-player deathmatch, the ability to see your opponents' weapons in multiplayer, voice communication and an easy way to save recordings of any game.

Product Design: Jason Jones
Programming: Jason Jones, Ryan Martell, Alain Roy
Art & Graphics: J. Reginald Dujour
Sound & Music: Alexander Seropian
Story: Greg Kirkpatrick, Colin Brent
Scenario Design: Jason Jones, Greg Kirkpatrick, Alexander Seropian, J. Reginald Dujour
Network Play Test Team: Aslag, Capt. Scarlet, Care Bear Killer, Habete Quiddam, Munch, Tender Loin
Damage & Spin: Alexander Seropian, Doug Zartman
Bob: Doug Zartman
Special Thanks: Eric Klein, Tuncer Deniz, Laura Weber, Max Minkoff, Brian Wink, J. K. Wright
Packaging: 13th Floor, Alexander Seropian, J. Reginald Dujour, Don Dixon
Catering: La Cocina