Games like Half-Life: Opposing Force

First-person 3D sci-fi FPS action shooter, low-poly 3D. Shooting and fighting aliens.

First-person 3D sci-fi FPS action shooter, low-poly retro. Shooting, surviving and exploring.

First-person 3D sci-fi FPS action shooter, detailed realistic graphics. Fighting enemies, exploring environments and using weapons.

3D sci-fi first-person shooter, realistic dystopian. Combat, physics-based puzzles and story exploration.

3D sci-fi first-person shooter, realistic 3D. Combat, vehicle combat and using surroundings.

3D sci-fi first-person shooter, retro 3D. Fighting, infiltrating and destroying enemy war machines.

First-person 3D sci-fi FPS shooter, retro 3D. Blasting minions and finding the source of evil.

First-person 3D fantasy FPS boomer shooter, retro 3D. Shooting and exploring.

First-person 3D sci-fi FPS boomer shooter, retro 2.5D/3D. Shooting aliens, saving babes and exploring episodes.

First-person 3D sci-fi psychological horror FPS, realistic gritty. Shooting, fighting paranormal minions and investigating secret projects.

First-person 3D sci-fi FPS action shooter, pixel graphics. Combat, exploration and infiltrating bases.

3D sci-fi first-person shooter, pixel graphics. Combat alien invaders, explore research facility and use various weapons.