Games like Subnautica on Steam
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Survivalist
It's one year after the collapse of civilization and self-centered hedge fund manager Joe Wheeler emerges from his specially constructed bunker in search of food. This is a huge open-world RPG where you have the freedom to play how you want - but your choices have consequences.
Rising World
Rising World is a voxel based open-world sandbox game, featuring a procedurally generated world, playable in single and multi-player.
Cubic Castles
Your blocks, your castle, your world! Build anything you can dream up and explore with other players! Cubic Castles is a mini-MMO that combines the best of block-building and 3D platform action! Create fantastic parkour challenges, explore worlds made by other players, or even make friend!
Generation Zero®
Generation Zero is a stealth-action shooter where you wage guerilla warfare against lethal mechanical enemies. Explore a vast open world map inspired by the Swedish Cold War era, take part in the resistance alone or with up to three friends in seamless co-op.
Doorways: Prelude
Doorways is an immersive horror adventure, featuring a complex story and deep atmosphere.
Saleblazers
Fight. Sell. Survive. Live off the land, build your perfect shop, and defend against nightly horrors in this open world survival shop simulator for 1-8 players.
Ghostwire: Tokyo
Tokyo's population has vanished, and deadly supernatural forces prowl the streets. Use an arsenal of elemental abilities to unravel the truth behind the disappearance and save Tokyo.
Distrust: Polar Survival
DISTRUST is an isometric survival adventure with procedural generation on an Arctic research station lost in the endless dark of a polar night. A story-rich fiction with multiple endings that suits both singleplayer fans and co-op enthusiasts.
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In the backyard of the civilization, left by destiny without any hope, you'll find this house on the hill. It will become your shelter and give you everything you need. But then, the owners of the hill will come. And you will pay for this shelter.
Eden Rising
Brace yourself for a brand new action-packed Open World. Explore a huge world to gather materials for gear and defenses. Use everything at your disposal to defend your bases and defeat hordes of hostile monsters. Play solo or up to 8-player online!
The Black Grimoire: Cursebreaker
A story driven solo RPG inspired by oldschool games like RuneScape and Ultima Online! Explore a sprawling medieval fantasy world full of npcs with dialogue, level skills, fight varied monsters and uncover the story of Rothar Aercrest – the cursed lord to the remote woodlands of Imberthale.
Grow Home
Experience the freedom of unbounded climbing as you take control of BUD, a procedurally animated robot on a quest to save his planet. Create your own path through an alien world as you control and ride a giant plant on a vertical journey to the stars.
The Complex: Found Footage
Experience the liminal world of the backrooms through a VHS camera, immersing into a mysterious story and wandering the dream-like structures... Might there be something following you?
Brigand: Oaxaca
Brigand: Oaxaca is a highly difficult post-apocalyptic RPG/FPS set in Mexico. Emphasis is on challenge, a branching story with multiple endings, and total freedom of action (kill friendly characters, rob stores, jump across roofs, etc.).
Pacific Drive
Face the supernatural dangers of the Olympic Exclusion Zone with a car as your only lifeline in this driving survival adventure! Scavenge resources, load up your trusty station wagon, and drive like hell to make it through alive.
Those Who Remain
As the lights go out, the embers of darkness are stoked in the sleepy town of Dormont. Confront uncomfortable horrors, keep your sanity in check and survive the night in this story-driven first-person psychological-thriller.
The Matchless Kungfu
The Matchless Kungfu is an open world sandbox RPG game based on a WuXia background. You can play any martial arts role you imagine in this wild world. Travel through the great wilderness, or be the leader of the group. The most important thing is, build your own story and live the experience!
SUNLESS SEA
LOSE YOUR MIND. EAT YOUR CREW. DIE. Take the helm of your steamship and set sail for the unknown! Sunless Sea is a game of discovery, loneliness and frequent death, set in the award-winning Victorian Gothic universe of Fallen London.
Fallout 3
Vault-Tec engineers have worked around the clock on an interactive reproduction of Wasteland life for you to enjoy from the comfort of your own vault. Included is an expansive world, unique combat, shockingly realistic visuals, tons of player choice, and an incredible cast of dynamic characters.
Metro Exodus
Flee the shattered ruins of the Moscow Metro and embark on an epic, continent-spanning journey across the post-apocalyptic Russian wilderness. Explore vast, non-linear levels, lose yourself in an immersive, sandbox survival experience, and follow a thrilling story-line that spans an entire year in the greatest Metro adventure yet.