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.
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No game lists Project Asteroids as one of its co-op favourites yet, so here are the closest matches by Steam tags instead.
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.
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Survive on an open-world island with unlockable abilities that help you on your journey in Gengu Survival. Craft new items as you level up and build your own base wherever you want. But be aware, there is something strange on this island...
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Sent to find a missing billionaire on a remote island, you find yourself in a cannibal-infested hellscape. Craft, build, and struggle to survive, alone or with friends, in this terrifying new open-world survival horror simulator.
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Dreadzone is a survival game set in a deadly quarantine zone. Scavenge for resources, craft tools, build shelter, and survive against dangerous animals, zombies, mutants, and other survivors. Explore the zone where desperation drives everyone to do whatever it takes to survive.
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Embark on an epic adventure to Mars in Horizon Journey, an open-world survival game that blends colonization, terraforming, and exploration in both single-player and multiplayer co-op modes. You're tasked with the monumental challenge of making Mars a new home for humanity.
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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.
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You survived a helicopter crash; going home is your top priority. Live as a castaway - survive the dangers of the islands by using your environment to find food, build shelter, craft tools to extend your stay, explore the secrets of the islands and their surrounding waters, and carve your way home.
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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!
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Your home is a living beast. Explore a handcrafted open world in an action RPG where you fight with magic, gather resources, find loot, craft, and grow stronger. Customize and expand your home on its back, and take it with you as you explore solo or with friends.
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"Broken World" is an exciting post-apocalyptic low-poly game where players have to survive in a world overrun by zombies and chaos. Build and strengthen your shelters, fight various threats and explore a dangerous world full of secrets and dangers.
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