Top similar games like The Unknown:
The Unknown $2.99
Aboard a small spaceship, you embark on an exploration, daring to face the threats of the universe. Activate your spaceship and uncover the hidden secrets of this vast cosmos.
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Unknown Signal: Invasion$39.99
Unknown Signal: Invasion is a continuation of the exciting sci-fi game. This time you have to go to an unknown planet to investigate a new mysterious signal coming from an unknown source.
Slippery Flippers: Episode One - Amulet of the Gods$3.99
A group of thieves have found their next gig: a museum holding the "Amulet of the Gods," a mysterious artifact said to contain godlike power inside of it. It's sitting there, just asking to be stolen. With law enforcement on the prowl, will the crew's leader, Orlando, lead them to riches or ruin?
Osiris: New Dawn$34.99
Osiris: New Dawn is an unforgiving near future space survival game with a cinematic feel and elements of horror. Play as a Mission Specialist in single or multiplayer to build your planetary base, pilotable vehicles, and controllable drones as you explore a dangerous solar system far from Earth.
Silent Breach$4.99
A short cosmic horror game where you remotely operate a land rover through an unknown planet labeled the silent zone.
Born Punk$19.99
A former combat hacker, a corporate CEO and a malfunctioning android get possessed by mysterious, otherworldly entities and must band together to save themselves and uncover the entities' origins. Talk, puzzle and explore your way through this (often humorous) cyberpunk thriller.
K37-D$1.99
In the year 2204 an average engineer gets an ordinary job offer that ends up being a lot more than he bargained for...
Where Is Here: New Home$10.99
Project New Home. You will play as a teen girl that will explore the world with her drone Cassandra but encounter mysterious obstacles along the way. She has the power to open all the portals. On her adventure, you will find mystery creatures that will help you or hunt you down.
Entity OnboardFREE
In this sci-fi survival horror game, you'll use tools such as a flashlight and tape recorder to survive while a mysterious entity chases you. Hide in the light and don't let it touch you. Power up each floor to escape!
Foreign Galaxies$4.99
After a galactic portal failure you find yourself lost millions of light years away from home, in a foreign galaxy... With your main propulsion systems disabled you are unable to traverse space, so you try to collect resources you find near you in order to create a galactic portal to return back.
Alpha Rooms$2.99
Alpha Rooms EXPLORE, ESCAPE, or GET LOST!
ALTERITY EXPERIENCE$9.99
You are Anton Cornwell, a Californian farmer. Recently, your ranch house is prey to strange and unexplained phenomena. Invaded from all sides, you need to be reactive by using your mind to prevent any intrusions. Will you survive the eventful night ahead?
Raster Prime [REMIX]$4.99
Your mind will short-circuit in this atmospheric pixel sci-fi puzzler with eight (8) levels of increasing difficulty. Decipher each binary sequence to travel further into the unknown, and unearth a deeper mystery that may never be fully understood.
They Look Like People$1.99
A Psychological story game set within a Kubrickian world. A tale of Space & Adventure into the Abyss of your mind, two astronauts come into close encounters with an unknown object during a routine mission.
Photon Engineer$9.99
Master laser manipulation and environmental control in this sci-fi puzzle game. Unleash your creativity and uncover the secrets of mysterious platforms that have suddenly appeared near Jupiter.
Suborbital$1.99
A sci-fi survival game with a twist. Set in a sub-orbit of a black hole, collect materials and scavenge wrecks in order to repair your damaged ship. However, time is not on your side.
Machinika: Atlas$11.99
Machinika: Atlas is an indie puzzle game and is the direct sequel to Machinika: Museum, you play as a museum researcher who just land on Atlas. Will you unravel the mysteries of the alien vessel? Solve cryptic puzzles to find out what happened!
Subject 7$4.99
This game is unlike any game you've ever enjoyed. Undergo a rigorous test of patience where every step you take the cameras follow. Will you obey and discover what lies behind the yellow door?
SPACE$11.99
SPACE is an atmospheric horror game set in eerie, abandoned structures floating in space. Explore labyrinthine corridors, face unsettling encounters, and endure the psychological tension of cosmic isolation. Discover the haunting beauty and terror lurking in the unknown
The Frosts: First Ones$2.99
An adventure about searching for a missing hunter and meeting with alien beings! Explore wild nature, climb on a rock, lure out a boar, meet a wolf, survive in a rockfall. Heal a deer and trick a creature! Meet the Unknown and find mystery!
TEMPUS$6.99
TEMPUS is a puzzle adventure game with time travel. Each time you advance, you will see the island where you live change over thousands of years. You can only travel forward so it is a one way trip, how far will you go?
Interregnum Chronicles: Signal$9.99
Mysterious signal with an unknown purpose reaches Earth. Inside a space station, a lone Operator and the onboard AI are tasked with analyzing the signal, but the process itself seems to have an unexpected effect on them. This is an INCREMENTAL game with a heavy emphasis on story.
Prominence$19.99
When the interstellar mission to colonize a new world goes terribly awry, the fate of the Letarri people falls into the hands of a lone adventurer. Now it's up to you to unravel the mystery of what happened. Can you save them and their mission, or is it already too late?
Scanner Sombre$5.99
Scanner Sombre is a 3d horror cave exploration game where darkness is your greatest foe. Illuminate the unseen with your LIDAR scanner, revealing the eerie beauty and peril of the abyss. From the creators of Prison Architect, this immersive adventure uses light and shadow for a haunting experience.
MirrorMoon EP$14.99
MirrorMoon EP is a game about mystery and exploration set in outer space. These space travels begin on a red planet and its unique moon and extend across galaxies. The single player part of MirrorMoon EP blends adventure and exploration with navigation-based puzzle solving.
RymdResa$11.99
A relaxed roguelike space odyssey in a procedurally generated universe! Travel through a lonely and mysterious cosmos. Customize your ship, explore and survive!
Lenny Loosejocks in Space$19.99
You guide Lenny and Donga in their epic quest to save the human race from the evil Sluggees. It's the groundbreaking point-and-click adventure puzzle game sequel to Lenny Loosejocks Goes Walkabout in all its pixelated glory - exactly like you remember playing when you got home from school in 1998.
GINSHA$15.99
GINSHA is a unique atmospheric pixelart Action Adventure Platformer with special Gravity Shield and Dash Mechanics. It combines a versatile Platformer core with RPG, Souls and Crafting Elements to an Anomaly among Metroidvania games.
Residual$19.99
Explore a forgotten galaxy full of different planets, venture deeper into the planet to mine for rare resources, craft items to fix your ship, and discover ancient secrets and life forms. An exploration (survival) game like no other.. Adventure awaits!
Galactic Sanctuaries$3.99
Protect the lighthouse, destroy nests and complete tasks.
Sentience: The Android's Tale$4.99
You can remember nothing before this moment. Your existence begins with a keystroke followed by the flick of a switch. Electrical power streams into your neural network, and you are alive.
Dark Scavenger$4.99
Dark Scavenger is a bizarre point-and-click RPG adventure with a focus on exploration, gaining loot, and meaningful choices. Filling the role of a powerful space traveler, you find yourself stranded on a mysterious alien planet. Will you save the world or just yourself?
Alien AI$9.99
An Alien AI came to Earth 20 years ago. We believed it was the greatest event in human history. The Alien AI offered us all the knowledge and technology it had. All we had to do was to help it recover and give it resources. We did.. It took over the world and enslaved us. Help us shut it down.
Asteroid Five$5.99
A first person space exploration game where you investigate the inner caves of an asteroid passing by your planet. Dive into the deeps of the asteroid aboard your ship, collecting information and samples of many beautiful minerals and lifeforms while searching for more complex and intelligent beings
The Captain$19.99
In this retro-inspired adventure game you will have to race back home across the galaxy. Collect new friends on your journey. Make new enemies. You won't be able to save everyone. Who will you leave behind? Which civilizations will you save - or destroy - along the way?
Hoboman$1.99
Hoboman is a 2D NES-style platformer with a unique Sci-fi story and wild characters. Play as Pluto the Voltran as you hop ships from planet to planet and collect geodes to get your life back!
Space Pilgrim Episode III: Delta Pavonis$1.99
Still reeling from the life-changing events of the previous episode, Gail seeks out a safe haven with her father in the Delta Pavonis system. However, she soon learns that the politics of Planet Leto can be as treacherous and unpredictable as the local weather.
Faraday Protocol$19.99
Faraday Protocol is a first person puzzle game that will test your wits and intelligence. Use the Bia-Tool, an ancient pistol-like relic of an alien civilization, to solve puzzles by bending energy and manipulating enigmatic machinery.
Missing PiecesFREE
Missing Pieces is a story-driven adventure in a vibrant alien world, full of hidden secrets, a plethora of languages and a sparkling cast of characters: lovable rogues, heartbroken families, and questionable allies. Find friendship and love, learn about yourself and discover who you really are!
Space Captain McCallery - Episode 3: The Weaponmaster's Challenge$4.99
Captain McCallery voyages to a planet of prehistoric monsters in search of a reclusive Weaponmaster.
Planternauts$14.99
Welcome to Planternauts – an immersive adventure in planetary terraforming where you play as a brave explorer tasked with greening barren landscapes. Explore, discover, and transform an alien world into a lush paradise by initiating a grand project to create a new ecosystem.
The Solus Project$19.99
The Solus Project is a single player exploration adventure with survival elements. The adventure is set on a mysterious planet and is the spiritual successor to The Ball - 2010 PC Gamer Action/Adventure Game Of The Year...
Protolife: Other Side$8.99
Reverse Tower Defense game where you control waves of creatures against towers. Protolife game spin-off.
DeliSpace$9.99
Deliver packages... in space! Test your agility by navigating through different galaxies carrying diverse packages and upgrade your ship. Will you become the best courier in the universe?
Stranded$0.99
A minimal point and click adventure, designed to take the player on a short but memorable journey.
ASA: A Space Adventure - Remastered Edition$9.99
ASA: A Space Adventure is a first-person sci-fi adventure game reminiscent of games such as the famous Myst series. Visit a vast spaceship called The Ark, divided into 6 areas, and discover the truth behind the Cubes...
WarpVector$4.99
WarpVector is an immersive sci-fi roguelike built around space exploration, combat, and navigation. Explore the remnants of an ancient civilization, fend off marauding space pirates, and find a way to save your home planet.
Planet MortFREE
Adapt and live
Close Contact$4.99
Close Contact is a narrative-driven, sci-fi horror game where you must navigate an advanced underground base whilst avoiding the alien creature that stalks you.
Bad Chicken$9.99
Bad Chicken is a retro styled sideway scrolling shoot-em-up inspired by the retro classics. It takes place in 8 locations in the Ferus system, each one with different challenges, and dangers.
Mission Andromeda$1.99
Escape from Earth! Navigate procedurally generated levels using your trusty Jetpack and Laser rifle, gather precious Ores to trade and Biomass to fuel your ship "Mole-1" on it's way to the final destination, Andromeda!
Catyph: The Kunci Experiment$9.99
CATYPH is a First Person Adventure game (Myst-like), part of a sci-fi series named The Black Cube (ASA: A Space Adventure...). Visit Tytaah, a moon of Catyph divided into 7 regions, and try to save your home planet Terra by solving the challenging puzzles of the mysterious Germinal.