Games like Interstellar Marines

You & your friends are the deadliest killers in the galaxy – the US Colonial Marines. It’s up to you to not just survive, but wipe out the Xeno infestation.

Take to the streets for intense close quarters combat, where a team's survival depends upon securing crucial strongholds and destroying enemy supply in this multiplayer and cooperative Source Engine based experience.

Survive, hunt and prey in the deadly jungles and swamps in distinctly new and thrilling first person gameplay.

Explore war-torn post-apocalyptic landscapes and take fight against enemies using various weapons in this FPS/RTS hybrid.

Starship Troopers: Extermination is an up to 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!

From commanding the battle standing on the bridge of your flagship all the way down to tactical infantry firefights - AFF brings together all the combat you ever loved in a rich science fiction setting. Boarding, pilotable capital ships, deep weapon customization and full Bot support included!

La Quimera is a story-driven FPS set in dystopian future Latin America. In a fractured world where microstates rely on mercenary forces, you are an operative caught in a web of lies and deception. Play alone or with up to two friends geared with futuristic weapons, exoskeletons and combat abilities.

You are John Dalton, an ex-Marine assigned to patrol the edge of human space as a Marshal for the Terran Colonial Authority. Unexpectedly, your monotonous life is shattered by a chilling distress signal, plunging you into an adventure beyond belief. Violent turmoil among the races has erupted on your watch.

The year is 3015. The battlefields are dominated by war machines known as BattleMechs. Level entire cities and decimate the enemy in your BattleMech. Follow a quest for glory and revenge. Manage an expanding mercenary company. Fight alongside your friends with a four-player PvE co-op.

Pulse-racing new installment from 2007's PC Game of the Year*: Play as Sergeant Sykes and experience a whole new side of the battle. A standard combat mission behind enemy lines becomes critical when you discover your enemies have captured something of vital importance to the ensuing war.

Fight for your life in the INDIE SCI-FI FPS game fit for both casual and hard-core gamers with a passion for hunting down hordes of zombies. Prepare yourselves for the incoming nightmare!

Experience the dramatic intensity of the frontlines of a war through the eyes of the first of a new breed of super soldiers in this gritty and epic first-person action game. An augmented super-soldier must stop a renegade regime from eradicating the civilized world. Hong Kong, 2065. 2nd Lt.

Onward is the most immersive tactical VR shooter. Join your squad for a wide variety of competitive PvP, co-op PvE, and solo game modes, including intense multiplayer battles or 4-player co-op missions. Realistic weaponry and combat mechanics will push your survival and combat skills to their limit

Built from the ground up for VR, Raw Data’s action gameplay, intuitive controls, challenging enemies, and sci-fi atmosphere will completely immerse you within the surreal world of Eden Corp. Go solo or team up and become the adrenaline-charged heroes of your own futuristic technothriller.

The Intelligence Agency has commissioned you, Francis Rixon, to find out what is happening inside the Corporation's confines and to retrieve information about a secret mineral upon which the very existence of the human race may depend.

Elite Forces is a cinematic tactical shooter engineered for precision, performance, and progression. Experience high-intensity combat, intelligent enemy AI, and photorealistic environments. Now officially available on macOS with the new cinematic version.

Battlezone: Combat Commander remasters FPS-RTS classic Battlezone II with slick new visuals, brand new achievements, Steam Workshop support and much more! The solar system is at war. Take command.

Aliens: Fireteam Elite is a cooperative third-person survival game set in the iconic Alien Universe. Battle through hordes of different types of Xenomorph, customize your character and gear, and level-up as you try to contain this ever-growing threat.