Top similar games like Mana Reactor:

Landiscape is a relaxed 1–4 player open-world survival sandbox set on a zombie-infested island. Build bases, scavenge resources, explore dangerous landmarks, grow crops, and survive together — or turn on your friends.

In the vastness of space, you are a lone robot desperately trying to survive. Build, explore, and fight for your life as you face deadly threats in the asteroid belt. This hardcore game shows no mercy—dangers lurk at every step, ready to destroy you at any moment.

Subsistence is a sandbox, first person, solo or co-op, PvE open-world survival game. Struggle through changing seasons to build a base, develop technology and gear-up in the hostile environment. Defend yourself from wildlife, the elements and AI hunters (who also build bases in the world).

Blightrest is a co-op survival action game set in a dark, open world where every decision brings you closer to either salvation or eternal damnation. Master survival, build fortifications, banish demons with ancient rituals, and explore the Wastes where even shadows have eyes.

Nightingale is an open world survival crafting game, where you’ll adventure across the mysterious and dangerous Fae Realms. As a daring Realmwalker, you’ll defeat monstrous enemies, survive hostile environments, and build elaborate estates in a visually stunning Gaslamp Fantasy world.

Play as a young viking, learn to survive and fight in the wilderness. To fulfill your destiny, explore an island alone or in cooperation with friends, build structures, confront Norse gods and mythological creatures. Will you be the last Viking?

Alone in a hostile universe, you're the last of your kind. Team up in a crew of up to 4 players, gather vital resources, upgrade your gear, and defend your spacecraft with the help of intelligent robots. But beware, in the dark, something is watching - and it won't stop until it finds you.

The Fifth Day is a post-apocalyptic survival game set in the time after mankind's extinction to the machines that it created. Your role, as one of these machines, is to survive in the hostile world left behind by man.

Outpost Zero blends the genres of Multiplayer Base Building Survival and Simulation games in a Sci-Fi universe. On a lawless alien world, robotic scouts are tasked with building an Outpost for human colonists. Command AI minions, colonize the planet, and survive the perils of Gaiya.

Crash-landed on an unknown planet filled with plasma and toxic weather. Your only hope? Bob, a sarcastic-genius AI who will question your every survival decision. Explore, build your mobile base and try to avoid death alongside up to 3 friends in Co-op.

Get ready for a Waterworld-themed survival game with modular base building, sunken city scavenging, crafting, base defense, and invasions of NPC clans for resources and territory. Ready for the water apocalypse?

Eden Star is a fast paced Sci-Fi survival game that blends unique physics based combat, destructible environments and free-form construction with the exploration of a hostile alien world.

Raft™ throws you and your friends into an epic oceanic adventure! Alone or together, players battle to survive a perilous voyage across a vast sea! Gather debris, scavenge reefs and build your own floating home, but be wary of the man-eating sharks!

Explore the unknown procedurally-generated world of islands and seas. Fight enemies, farm materials, craft equipment, build your base, slay bosses and level up your character. Conquer the unknown with your friends.

You are Flameborn, last ember of hope of a dying race. Awaken, survive the terror of a corrupting fog, and reclaim the lost beauty of your kingdom. Venture into a vast world, vanquish punishing bosses, build grand halls and forge your path in this co-op survival action RPG for up to 16 players.

Aurendor is an open world survival game. Players must gather resources, cook their meals and fight dangerous creatures to survive and build a home for themselves. Aurendor also offers a multiplayer game option. Players can play together by cooperating with or battling other survivors.

Plunge into the open-world survival simulation set in the extreme conditions of the uncharted Amazon jungle. Use real-life survival techniques to craft, hunt, fight, and gather resources, set a makeshift shelter, or raise a fortress. Survive alone or team up with your friends and challenge the jungle together.

IMPORTANT --------------- This demo is outdated. NEW DEMO [KARAGON: MULTIPLAYER INTRO] LINK BELOW!

Strike with one hand, parry with the other. Barbarian is an open-world survival crafting RPG featuring brutal boss fights, skill-based combat, base building, and seamless multiplayer. Developed entirely by a solo developer.

Beyond Hope gives you and your friends one epic space journey! Your mission alone or with friends is to save yourself from getting pulled into the hot Sun. Gather debris, scavenge asteroids and build your own space station. Reach for the stars and survive when all odds are against you!

Awaken as a Vampire. Hunt for blood in nearby settlements to regain your strength and evade the scorching sun to survive. Raise your castle and thrive in an ever-changing, open world full of mystery. Gain allies online and conquer the land of the living.

Survive the extreme conditions on Mars. Compete or cooperate with others to gather resources, 3D print your equipment and build your base, unveil the story behind the abandoned mining operations and, ultimately, escape the Red Planet.

Shrunk again, but the world is much larger. In this open-world, single-player or co-op survival adventure, craft weapons and armor, build your base, and traverse the playground on your buggy. But something else is out there—and it hasn’t forgotten you.

Survive in a ruined Biosphere on a hostile alien world. Endure, then harness the extreme weather, battle powerful bosses for upgrades, and uncover the mystery behind the planet’s lost atmosphere.

A light-hearted but deep first person exploration and survival game for you and your friends set in a procedurally-generated asteroid belt on the edge of known space. Explore the world, learn new skills, build and defend your base, and conquer the belt's unique threats.