Top similar games like AlterSpace:

Lead a rebellion against tyranny in this open-world, survival sci-fi RPG game. Utilize alien technology to explore, build bases, craft, and farm. Prepare for an unequal combat to rescue humanity from tyranny and a mysterious deadly virus.

3d space style game where you walk around a ship trying to figure out what happened as you seem to be the only survivor. In the far future as humanity fights its biggest war yet. you wake up in a broken ship floating in space with no clue what happened to the crew or the ship.

Outpost is a building and planet exploration game. An entire planet is available for you to explore.

The scar is an open world adventure and survival game, where you can create your own weapons and tools, build bases and fight against what were once humans and aliens. You will be able to use Ashun's summons, which to our eyes is magic.

INTERASTRA is a fully immersive first-person sci-fi survival adventure game set in outer space. Discover unknown planets differing in weather conditions, resources, and various mysteries. Craft necessary equipment, launch, and control space rockets, explore the universe, and survive among the stars.

Dive into a thrilling survival adventure where an unknown liquid takes control of your life. Extract Serum to stay alive, battle dangerous creatures, solve puzzles, and uncover clues about past events. Find your way out alone or in a 4-player co-op mode.

Spiritus Astrum is a persistent, open-world, multi-player, roleplaying sandbox. It features an infinite, procedurally generated universe which players are free to explore without restriction. Spiritus Astrum is more than a game, it is a world.

Alien zombies survival game, open world survival.Game uses unreal engine 5

Fight, Mine, Scavenge, Trade, Craft or Mission your way through the Anadeia Galaxy as you explore synergies of different skills, ships, weapons and equipment alone or on the couch with a friend in this sci fi space sim.

MOVAFORT is the world’s first Time Travel Open World video game, Where you Can Travel to the Future or the Past to Change the Timeline Without limits. Paradoxes will find you when it comes to bring items to the Past from the Future with you.

Lost in the middle of the ocean, find the key to save humanity from an eternal life on the open sea in a continuous fight for survival.

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.

Forever Skies is a first-person post-apocalyptic survival game. Return to Earth, ravaged by an ecological disaster. Fly, upgrade and customize your mobile high-tech airship base. Scavenge resources to survive, face dangers on the surface and hunt for viral pathogens to cure a mysterious illness.

The Outer Worlds is an award-winning single-player RPG from Obsidian Entertainment and Private Division. As you explore a space colony, the character you decide to become will determine how this player-driven story unfolds. In the colony's corporate equation, you are the unplanned variable.

Enhance your DNA and your creature companion to explore and unlock the mysteries of a new world... Open world survival, crafting, and exploring. Alter your DNA to help you survive the various environments. Challenge others in the Arena for supremacy

Freeman: The Resistance - is a single-player sci-fi adventure that seamlessly blends spaceship combat and planetary exploration. Unravel the mysteries of a richly crafted open world. Engage in thrilling battles, gather valuable loot and RPG elements to enhance your journey.

Vosphia is a single-player RPG set in a medieval fantasy world. Explore the vast world of Vosphia and meet dangerous enemies to fight, build your own personalized base, craft and equip customized items, and create your own story in the world of Vosphia!

Crash-land onto a unique and hostile alien world and begin your fight to survive. Face its inhabitants, upgrade your technology, create outposts & bases, and find a way to repair your ship. Explore the beautifully strange terrain, all while blasting and crafting your way off of the planet.

Honeycomb: The World Beyond is a survival-sandbox game set on an exuberant planet – Sota7. Explore its vast world and face challenges on your bioengineering journey. Crossbreed plants or animals, gather resources, craft items, and conduct experiments in order to develop new species.

A sci-fi action-adventure game in VR.

Harvest, Build, Craft and Explore the different biomes among massive trees, plants, and hostile creatures to survive and unlock the mysteries of an alien jungle in a first person sci-fi survival adventure.

Evolution Survival is a survival game where the universe evolves around you. The plants and animals you saw at the beginning will be different at the end, They may not even be there, the star may have gone supernova or shrunk into a white dwarf. Who knows when Natural Selection is at the wheel!

A retro-futuristic single player survival RPG where you control a hand-picked team of 4 separate characters; each with their own unique specializations, attributes, and inventories.

HIRAETH is a sci-fi, first-person survival game set on a desolate, alien planet. Adapt to various threats while discovering the secrets of the abandoned, dystopian colony. You can choose between two distinct game modes that share common gameplay mechanics - sandbox and story.

Seized by criminals, the island designated for your research needs your help. Join Yatziri and the Wazhari tribe to liberate their hostages, explore hidden secrets, craft essential items and weapons, and strategically use fire and water in challenging puzzles and life-or-death battles for survival.

Interstellar Rift is an open world starship simulator with an emphasis on ship construction and multi-player interaction. Survive in a hostile galaxy with your own custom designed and constructed starship. Invite other players to join your crew or fight them across the galaxy!

Expansion Core is a Nomadic Survival game that borrows both first person and real time strategy elements. Gather resources, craft tools and build allies to help you survive. Inventory management is key as you move throughout the landscape.

An open-world, story-driven survival game. Explore the wilds, collect resources, craft, build, and fight to survive! As the days pass by, you must stay alive on an alien planet, and find a way to contact help.

The Glade is a beautiful open world survival set on a stylized island which has been struck all over from large and mysterious meteorites creating a bridge for evil creatures from another world to enter and destroy anything in their path.

Erzurum is a winter survival game which you will struggle against freezing temperatures, the wild nature, hunger and thirst.