Top similar games like Portals World:

You’ve crash-landed on Earth in 2702. Craft, dig, fight through a vast and colorful post-apocalyptic open world full of wonder, generated cities, dungeons, aliens, mechs, and an underworld. Find love. Or beat the ultimate Underlord!

Crash land on a hostile planet where you'll have to build the strongest defenses if you wish to live to escape from it. But be warned... this planet is merciless. Build strong, and smart; else physics may flood or destroy your only hopes of survival.

TerraTech is an open-world, sandbox adventure game, where you design and build your own creations through a mix of crafting, combat and discovery. Design vehicles from a huge library of blocks. Scavenge, craft and buy new parts to survive and become the ultimate planetary prospector.

You wake up alone in a damaged space station with no memories. To get out of here, you will have to build your own spaceship. But survival comes first: gather resources, build a base and a factory out of gear and steam, and explore hand-crafted planets with unique biomes and resources.

Command swarms of warriors at an unprecedented scale of warfare in this blend of RTS and base-building. Lead ant colonies against the many fearsome threats of the insect world, while building intricate nests, developing pheromone-based tactics, and evolving to meet growing dangers.

Hostile Mars is a factory-building game focused on combat! Explore an open world and discover new tech to unlock powerful weapons and structures. Create efficient supply chains using delivery bots. Salvage destroyed enemies for resources. Design your base to withstand increasing waves of enemies!

Grab your jetpack and explore procedural asteroid fields, derelict spaceships and abandoned outposts. Build your Space Rig to process scavenged trash. Craft, trade and fight your way home in this interstellar, open-world survival sandbox.

Space Engineers is a sandbox game about engineering, construction, exploration and survival in space and on planets. Players build space ships, space stations, planetary outposts of various sizes and uses, pilot ships and travel through space to explore planets and gather resources to survive.

Red Planet: Survive is a first person survival game for Microsoft Windows. Surviving in the harsh conditions of the Red Planet will be hard, but if you are strong enough, you will succeed. Find the best way to survive, but be careful, since each wrong step will ensure your demise. The environment is your main enemy.

Signs of Life is a sci-fi survival sandbox platformer with a combination of procedurally generated and hand-crafted content. You'll explore mysterious locations, Mine blocks for resources, and meet strange (and some familiar) creatures, some of which don't even want to kill you and eat your corpse.

Hotfix is a chromosome enriched solo indie game inspired by Minecraft and Enter the Gungeon. Create your own - near infinite - world full of randomly generated structures filled with guns and loot. Explore, build, and gather resources during the day and avoid robotic "dogs" powering up at night.

Stranded in a hostile alien world, you must fight to survive. Hunt, harvest, craft, advance skills, and build using local resources along with technology from your voyage.

Have you got what it takes to survive on Mars? ROKH is a multiplayer survival game featuring scientific realism and extremely deep crafting and building. Make the red planet your sandbox and create a thriving colony.

Build your ship, manage your crew and explore the cosmos whilst trying your best to keep your crew alive and your ship fully functioning. This game utilises an events driven AI and simulated ship systems to ensure gameplay is kept challenging and every game you play has a different story to tell.

Discover a whole new world with Mars City Builder! Construct roads, erect buildings customize the city and take care of its safety. After all, you are the first Martian settler and this is a vast, unknown land. Develop it in any way you please!

Remains - survival in outer space orbiting the planet. Explore the area. Find a way to restore oxygen. Create tools for your needs. Beware of the dangers of outer space. Build your shelter in orbit and try not to die!

Suit up as an operative of the Ark Corporation, sent to the farthest reaches of the universe in search of habitable planets to terraform. However, after the long space journey you awaken from cryosleep to find that your ship has gone way off course and is disabled near a strange new world.

Castle Story is a creative voxel-based strategy game in which you can build castles one brick at a time using an army of little creatures called Bricktrons. Design and build your own castles, expand your territory in a vast landscape and defend your Bricktrons against onslaughts of hostile creatures.

Survive and colonize Mars in a highly technical, open-world sandbox game. Build and upgrade your base, discover new regions, conduct mining operations, retrieve water, generate oxygen, grow crops, and fix broken parts.

100000 years after the apocalypse, a mysterious entity guides you to build a factory on a desert island...

Cube Universe is a first-person voxel RPG. Visit many different, procedurally generated planets. Team up with your friends to fight against fierce enemies in dungeons. Do quests to save the world from the forces of evil - or throw it into chaos.

Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!

Explore, Adventure, Craft, Build, Survive. How will you shape your world? Astral Terra is a Smooth Voxel, Procedurally Generated Open World game with RPG and Survival Elements!

Excavate, combat, discover, construct! Every challenge can be conquered in this thrilling adventure game. Immerse yourself in endless creativity as you explore through uncharted territories , engage in epic battles and shape thw world with your own hands.

Stationeers puts you in control of the construction and management of a space station to run by yourself or online with your friends. Complex atmospheric, electrical, manufacturing, agriculture, and gravitational systems require your thought and management at all times!

A space survival open world terraforming crafting game. Transform the ecosystem of a hostile planet to make it livable for humans. Survive, collect, build your base then create oxygen, heat and pressure to make a brand new biosphere.

A 2D automation sandbox adventure. Build an automated factory reaching up to the sky and deep underground, uncover a vast world filled with wonder and danger, upgrade yourself with ancient technologies, and defend it all from enemy attack.

Starbase is a hybrid voxel/vertex-based space MMO with a fully destructible and infinitely expanding universe, with a focus on building and designing spaceships and stations, exploration, resource gathering, crafting, trading, and combat.

Construct, maintain, manage and upgrade the fleet of your space robots in this sandbox crafter. Build the base, gather resources and automate to succeed in your mission in a unique robotic spacesim.

Automate, Defend, Repeat: A combination of factory management and tower defense strategy. Build a planet-dominating factory, defend it from disgruntled resource-carrying monsters, and defeat a total of 6 bosses. Once you have done that, select a New Game + modifier and do it again!

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.

Force of Nature 2: Ghost Keeper offers incredible adventures full of mystery, danger, exploration and magic. This game combines the genres of Survival, Sandbox, Action, Adventure, RPG, Strategy and Resource Management

An open-world survival craft game with laser guns for 1-4 players. Crash-landed on an uncharted planet brimming with plasma, you must survive and craft your way out of this place. There will be plasma guns and futuristic weapons too.

Hive and Seek is a side-scrolling strategy base-building game where you clear randomly generated Roguelike stations infested with monsters. By rallying robots and clearing rooms, you will be able to destroy hives and recapture the station piece by piece.