Games like Outcast on Mars

Divergence: Online is a sandbox-style MMORPG that offers a rich, player-driven world. Choose from multiple factions and professions to shape your character and explore a vast, procedurally generated universe. Engage in real-time combat, construct unique buildings, and form alliances to dominate the political landscape. However, be prepared for a challenging learning curve and a lack of structured quests.

Night Crisis is based upon a multiplayer co-op experience. The game will focus on a linear PvE-experience, There will be multiple factions of enemies to take down, which may have units on the ground, in the air and on sea.

A.I.L.A is a single-player horror shooter that immerses you in a series of disturbing, photorealistic scenarios crafted by an A.I. that preys on your deepest fears. Evade a ritualistic cult, solve gruesome puzzles, and battle medieval undead across multiple intense horror genres, all within a marvelous story and stellar, atmospheric visuals.

"171" is a single-player, open-world game with good graphics, set in a vibrant city inspired by Brazilian scenarios, offering regular updates and new features, including customizable vehicles and weapons. However, it's missing optimization and has several bugs, with occasional themed updates to enhance the gaming experience. The game aims to provide a sense of familiarity to the player with its captivating setting and attention to detail.

LifeZ - Survival is a first-person open-world survival game set in a post-apocalyptic world overrun by zombies. Scavenge for resources, build your own base, and fight off both the undead and other players to ensure your survival. Craft and customize your weapons, and form alliances to increase your chances of surviving the harsh, unforgiving world.

Terminator: Resistance is a single-player, first-person shooter set in a post-apocalyptic world overrun by machines. Players take on the role of a resistance soldier, Jacob Rivers, as he fights against the relentless killing machines of Skynet. With multiple ways to tackle missions and a focus on strategic combat, the game offers a challenging and immersive experience for fans of the Terminator franchise.

"Nostos is a PC and VR cross-platform, open-world survival game with a focus on multiplayer and co-op play. It offers a vibrant ecosystem, day-night and season cycles, unique creatures and landscapes, and a compelling story. Despite some optimization issues and bugs, Nostos boasts outstanding visuals, immersive weather effects, and realistic combat, drawing inspiration from Oriental animated films."

Stardeus is a single-player sci-fi colony management simulation game with real-time strategy elements, where you play as an immortal AI with robots and drones at your disposal, tasked to build, manage, and automate a spaceship while ensuring the needs and well-being of human colonists or robotic workers. The game features complex and emergent situations through independent systems, which can be expanded through mods, and offers base building, needs-based AI, and space exploration.

"The Fifth Day" is a post-apocalyptic survival game where you play as a machine in a world left vacant by humans. Explore diverse environments, gather resources, and compete in online survival matches against other players. Upgrade your skills and eliminate opponents to become the dominant machine in this desolate world. Offline freeplay mode also available.

In "Invasion 2037," take on the role of a survival scientist in a post-apocalyptic world overrun by alien-controlled zombies. Manage your shelter, including electricity, ventilation, and gardening, while fighting to survive and finding a cure for the virus. The developers are currently working on a new version of the game, with updates and progress reports available on Discord.