Early 2000's inspired 1st/3rd-person shooter, with vehicles, ships, jet packs, multiple foot‑soldier classes, space battles, and so much more. The game features a Single-player campaign with several uniquely designed missions, and multiple Multiplayer modes such as Conquest, FreeForAll, and Escape.
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No game lists Ghost Battalion as one of its co-op favourites yet, so here are the closest matches by Steam tags instead.
Take control of a capable combat frigate with your friends in Contingency Plan, a VR multiplayer co-op sci-fi spaceflight game about taking contracts and making money.
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Team up and take flight in this sci-fi co-op shooter with fully destructible environments. Soar through dynamic open levels using powerful abilities, master advanced weapons and vehicles, and lay waste to the armies of a hostile colonizing threat - defend your home worlds!
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WWII Online is a massive, persistent free-to-play MMO FPS driven entirely by players. Fight as Army, Air, or Naval forces and earn Victory Points to access more units. One global server. No scripts. Real outcomes. No zones. Huge world (300,000 km²). ENLIST NOW!
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Unit Zero is a first-person multiplayer shooter with realistic bodycam-style graphics made in Unreal Engine 5. Includes competitive and cooperative zombie modes. Investigate what went wrong in the secret operation that unleashed the nightmare.
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Things are about to get… bloody! Soak up 42 pulse-pounding levels dripping with Lovecraftian atmosphere as you battle your way through armies of sycophantic cultists, zombies, gargoyles, hell hounds, and other insatiable horrors, in your quest to defeat the loathsome Tchernobog.
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Type: Science fiction and theology style FPS multiplayer shooting game; Topic: Discovering the Truth of the Universe in the Future of Humanity and Its Impact on the Evolution of Human Bones; Modes: PVE (Gun Shooting Battle and Summoning Flying Shuttle Battle), PVP (Gun Shooting Battle).
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Jump Space (formerly Jump Ship) is a mission based co-op PvE for 1-4 players, where you are the crew of a spaceship. Transition seamlessly from crewing the ship to on-foot exploration and space walks. Explore, upgrade, and survive intense encounters in deep space together.
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Face the darkness in Moros Protocol, a pixel-painted sci-fi FPS roguelite. Survive the nightmare alone or with allies as you navigate the decaying warship, stalked by horrors and guided by a voice you don’t recognize. Adapt, upgrade, and push forward. You may be outnumbered, but not outmatched.
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R-Space is a fast-paced first-person shooting game that supports up to 4 people online. Players need to survive round after round of trials, continuously strengthen their abilities, and challenge higher rounds.
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Immerse yourself in a first-person shooter where Low-poly cartoonish visuals clash with a sinister, gloomy atmosphere. Armed with a massive arsenal of weapons, you’ll blast through hordes of Enemies, infiltrate a sinister lab, and fight your way to the escape point.
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