Cooperative
Cooperative gameplay (often abbreviated as co-op gaming) is a feature in video games that allows players to work together as teammates against one or more AI opponents. It is distinct from other multiplayer modes, such as competitive multiplayer modes like player versus player or deathmatch. Playing simultaneously allows players to assist one another in many ways: passing weapons or items, healing, providing covering fire in a firefight, and performing cooperative maneuvers such as boosting a teammate up and over obstacles. Read the full article at the Wikipedia.
Zod Engine
by Nighsoft
2011-09-05
(6 Sep 2011)
Zod Engine is a remake of the 1996 classic game by Bitmap Brothers called Z.
Genre: Strategy 
Steel Storm: Burning Retribution
2.00.02966 (5 Dec 2011)Steel Storm: Burning Retribution (a.
Genre: Shoot 'Em Up, Action 
Chicken Invaders 4: Ultimate Omelette
Release (29 Nov 2010)I remember the day of the invasion well.
Genre: Arcade, Shoot 'Em Up 
Serious Sam II
by Croteam
2.070-RC2
(7 Nov 2006)
The series famous for relentless intensity is returning bigger, better looking and more frantic than ever before.
Genre: Shooter, Action 
Serious Sam: The Second Encounter
by Croteam
1.07-beta1
(14 Mar 2003)
The Second Encounter introduces three worlds where cyberpunk once again meets fantasy fiction, and features frantic action in 12 massive...
Genre: Shooter, Action 
Serious Sam: The First Encounter
by Croteam
1.05-beta3
(14 Mar 2003)
Serious Sam is a high-adrenaline action-arcade shooter heavily focused on frantic arcade-style single player action.
Genre: Shooter, Action 
Descent³
1.4.0b (25 Jan 2000)Descent³, the newest member of this classic 3D series, has an all-new game engine for improved rendering and gameplay.
Genre: 6DoF, Flying / Aviation, Shooter, Action 
Devastation
381(beta) (1 May 2003)On a future devastated Earth, powerful, corrupt corporations control remaining technology and rule what's left of society.
Genre: Shooter, Action 
Chicken Invaders 3: Revenge of the Yolk
Chickens. For centuries we have oppressed them, grilling, roasting, stewing, and stuffing them in buns.
Genre: Arcade, Shoot 'Em Up 
Smokin' Guns
1.1 (8 Jun 2012)The Smokin' Guns game started its life under the name of Western Quake³.
Genre: Shooter, Action 
Shadowgrounds Survivor
by Frozenbyte
1.0.9
(24 Oct 2011)
Shadowgrounds Survivor is a spin-off/sequel to the underground hit Shadowgrounds.
Genre: Shooter, Action 
Shadowgrounds
by Frozenbyte
1.0.5
(28 Oct 2011)
Shadowgrounds is a sci-fi action game that blends addictive old school gameplay and modern technology into one big, nasty alien-battling...
Genre: Shooter, Action