Games like Astrumis: Survive Together

Clandestine is a 2-player or singleplayer stealth/hacking game set in 1996. Asymmetrical co-op allows one player to take the role of the spy while a friend provides overwatch and assistance as the hacker, and unravel a post-Cold War espionage conspiracy.

"Backrooms Rec. is a chilling action game, available in early access on Steam, where players can explore the labyrinthine Backrooms in single-player or multiplayer co-op modes. Immerse yourself in a terrifying atmosphere with realistic visuals and uncover the secrets behind the walls of this mysterious place."

Hidden Deep is a 2D sci-fi thriller game set in a sub oceanic mining and research facility, where you lead a team to discover what happened to the previous researchers who went missing. Utilize specialized equipment, give orders to your team, and defend against horrific alien life forms and other unknown dangers. The game features multiple game modes, including a single-player option.

Everreach: Project Eden is a fast-paced, story-driven action RPG set on the visually stunning planet of Eden. As a member of the Everreach elite forces, players must uncover the secrets of Eden's ancient civilization and save its future. Engage in epic battles against dangerous enemies, master unique weaponry, and explore diverse environments in this thrilling sci-fi adventure.

ENCODE is a single-player, story-driven Role Playing game set in a dystopian, open-world cyberpunk atmosphere. In the fictional country of Nira, a state security force uses advanced technology to monitor and control citizens, assigning numerical scores based on loyalty. As an indie developer's expressive work, ENCODE explores faith, philosophy, and politics while providing an immersive experience with a compelling soundtrack, despite possible shortcomings in production quality.

In "Vladik Brutal," experience a fictional East European dictatorship's brutality, where citizens are chipped, monitored, and dressed uniformly. Navigate managed locations filled with easter eggs, diverse opponents, and allies. Wield 12 types of weapons, solve puzzles, uncover secrets, and engage in proven shooting gameplay in this one-person developed game. The dictator's Big Research Centre exploits prisoners for nefarious purposes, and you must navigate this harsh world. Please note that bugs and errors are possible due to the game's one-person development.

Species: Unknown is a first-person survival horror game, playable in co-op with up to 4 players (private or public servers) or solo. You play as a mercenary sent aboard an abandoned spaceship. Your job? Execute high-risk contracts, make it out alive, and claim your reward. But keep in mind that you’re not alone. Something is hunting you… Form a squad of up to 4 players to take on different con…

"Beyond Hanwell" is a first-person exploration and combat game set in a richly detailed, atmospheric version of Westminster, London. The non-linear gameplay allows you to discover the world and its secrets in your own way, using a variety of weapons and environmental objects to take down enemies. With no HUD and immersive player feedback, the game keeps the tension high as you uncover the truth about yourself. Scavenge for resources and use creative methods to survive against anomalies in this intense, explorative experience.

Interstellar Marines is a tactical sci-fi First Person Simulator, inspired by movies like Aliens and games like Half-Life. It offers singleplayer and co-op/PvP gameplay, with dynamic environments and non-scripted AI. The game aims to evolve the FPS genre with its blend of sci-fi, role-playing, and military realism.

Their Land is an action-adventure first-person game with puzzles and an exciting story to experience. You play Jeremy, a 19 year old orphan who explores an untrodden island with his much older and more experienced friends. Will you fall victim to this fabled lands many perils?