Top similar games like Portals World:
Portals World $9.99
A sci-fi action strategy tower defense digging 2D top down game, Dig, explore, build production and defensive facilities, take care of robot's battery and manage power wisely..
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FortressCraft Evolved!$12.99
FortressCraft Evolved is a unique blend of Voxel Landscapes, Tower Defense, Crafting, Logistics, Exploration, Combat and Assembly lines. Players begin by crash-landing on a strange alien world, left with only a small handful of starting machines.
Planetary Defense: An Orbital Turret Defense System$1.99
2D space shooter and turret defense come together to create the Planetary Defense System this world needs! Shoot down asteroids and aliens and survive the bosses in this arcade like game featuring customizable satellites, projectiles, and upgradable Cannon and Planet Shield systems.
Total Factory$14.99
You are a robot with unrealistically advanced artificial intelligence on a previously unknown planet, people created you for one single purpose - to ensure the automatic production of the necessary resources and their dispatch. It would seem that what could go wrong?
Planet Factory$0.99
A small quick game about building a factory to launch planets into a solar system! Grow your base and increase production to make the ultimate factory for launching planets!
Chocolate Factory$19.99
Build your dream Chocolate Factory among candy cane forests and gumdrop hills to produce the tastiest sweets. A delicious first-person factory automation game with a little exploration and combat. Confectionary conveyor belt heaven awaits!
Chocolate Factory: PrologueFREE
Build your dream Chocolate Factory among candy cane forests and gumdrop hills to produce the tastiest sweets. A delicious first-person factory automation game with a little exploration and combat. Confectionary conveyor belt heaven awaits! The free prologue for the full game!
Space Trash Scavenger$19.99
Grab your jetpack and explore procedural asteroid fields, derelict spaceships and abandoned outposts. Build and automate your Space Rig to process scavenged trash. Craft, trade and fight your way home in this interstellar, open-world survival sandbox.
Nimbatus - The Space Drone Constructor$19.99
Command the Nimbatus and craft drones out of hundreds of different parts. Survive unknown threats in a fully destructible, procedural universe, compete against other players in different arenas or enjoy complete creative freedom in the sandbox.
Space Haven$22.99
Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.
Engineered To Purpose$9.99
Engineered to Purpose is a new tower defence game where you custom-design towers to defend your base, with millions of builds to explore and refine. Set in the far future, E2P's story of posthumanism, family, and change will open new worlds to explore and survive.
The Universim$29.99
Jump straight into managing your own planets as you guide a civilization through the ages. Build the ultimate empire in The Universim, a new breed of God Game in development by Crytivo.
Maia$24.99
Maia is a colony building game set in the not-so-distant future. Your colonists make planetfall on a hostile world and you must ensure their survival and their safety, constructing their off-world habitat from almost nothing and sheltering them from a dangerous, often deadly environment.
Planetbase$14.99
Guide a group of space settlers trying to establish a base on a remote planet. Grow food, collect energy, mine resources, survive disasters and build a self-sufficient colony in a harsh and unforgiving environment.
StarMade$14.99
The ultimate space sandbox. Participate in epic fleet battles, form alliances, strive to dominate entire galaxies and harness the universe’s resources for your industrious empire or the destruction of others. Customise your experience, the universe is yours!
Craft The World$18.99
Craft The World is a unique sandbox strategy game, the mix of Dungeon Keeper, Terraria and Dwarf Fortress.Explore a random generated world populated by dangerous creatures, build a dwarf fortress, gather resources, and craft all the items, weapons, and armor you need.
Project ScrewedFREE
Work together with your friends in this stressful 4-player couch co-op game as you defend against hordes of enemies trying to destroy your base. Manage both your time and your resources in an effort to balance all the needs of your base. Are you and your friends up for the task?
Planetary Exploration Company$3.99
An action rogue-like, bullet heaven, management sim. Survive alien hordes as you explore planets, extract resources to build tools and unlock new items, complete jobs to earn money while you manage your employees and make your company grow.
Keplerth$14.99
Welcome to Keplerth! Try to survive on a hostile alien planet in this 2D sandbox RPG, where you can choose to live alone or fight side by side with your friends in the online multiplayer mode. Survive, build, farm, fight, and explore your way to victory in this open-world adventure!
Stonehearth$19.99
Pioneer a living world full of warmth, heroism, and mystery. Help a small group of settlers build a home for themselves in a forgotten land. Establish a food supply, build shelter, defend your people, monitor their moods, and find a way to grow and expand, facing challenges at every step.
Goblins of Elderstone$24.99
This Goblin Tribe Simulator brings a challenging blend of chaos and creativity to the city-building genre. Build dwellings, manage your resources, defend your goblins, and grow your tribe to face other races and even the Gods! Do you have what it takes to control the chaos and rule the unruly?
Space Station Tycoon$19.99
Create a thriving space station in a lost sector. Face thrilling challenges head-on, from pirate raids to asteroid impacts, as you lead your company to new heights.
Medusa Frontier$0.99
Medusa Frontier is a budget sci-fi survival game being developed with OpenGL & C++. Gameplay is currently limited to resource gathering and base building on a 1k terrain map.
Artificer's Tower$14.99
Are you a master of the magical arts? Prove it in this cozy colony-sim wizard tower defense game. Curl up and build your base, keep your mages happy, craft recipes, research new magic spells, and defend your wizard's keep. Will your Artificer's Tower be the envy of all your magical friends?
Empyrion - Galactic Survival$19.99
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!
Embark$24.99
Inspired by the deep simulation of Dwarf Fortress, the open world survival of Minecraft, and the social interactions of The Sims. Embark is a colony management game with a focus on complex simulation in a huge living 3D world.
Force of Nature$7.99
Force of Nature is a Sandbox game that combines Action, Adventure, RPG, Strategy and Management genres
Universal Combat CE$9.99
The ultimate space capital ship combat compendium is the evolution of hard core space combat sims. The only game of its kind currently in existence.
Kingdoms and Castles$14.99
Kingdoms and Castles is a city-building simulation game about growing a kingdom from a tiny hamlet to a sprawling city and imposing castle. Make trade agreements, alliance, and war with neighboring AI controlled kingdoms. Each villager and resource is individually simulated.
Astronaut Assault$9.99
Dive into Astronaut Assault, a third-person Sci-Fi tower defense game, and battle against relentless enemy waves in diverse arena settings. Arm yourself with an array of turrets, traps, and gadgets to halt, hinder, and outmaneuver your foes.
Outpost Zero$19.99
Outpost Zero blends the genres of Multiplayer Base Building Survival and Simulation games in a Sci-Fi universe. On a lawless alien world, robotic scouts are tasked with building an Outpost for human colonists. Command AI minions, colonize the planet, and survive the perils of Gaiya.
Oxygen Not Included$24.99
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
Ruinarch$24.99
Ruinarch is an evil god simulator and sandbox game where you mess with people’s lives for hilarious results! Make them vampires, werewolves or bard haters and cackle as the drama unfolds. Once you’re done, unleash a malicious buffet of spells and custom plagues to wipe them out and start anew!
A Lanterns Glow$9.99
ALG is a challenging top-down survival RPG. Explore an expansive, randomly generated world shrouded in darkness. Gather resources, craft items, construct buildings, fight strange creatures, and study magic and science to survive and solve the many mysteries of the forest.
Idle Worlds$7.99
An idle game with unique gameplay features. Travel between 8 different worlds and upgrade local generators to increase your profit. Use unique upgrades system to boost your stats or discover even more interesting prestige system to maximize your profit.
Starbound$14.99
You’ve fled your home, only to find yourself lost in space with a damaged ship. Your only option is to beam down to the planet below, repair your ship and set off to explore the universe...
Cubic CastlesFREE
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!
The Spatials: Galactology$12.99
The Spatials are back with Galactology! Design, build and protect your colony station from the many enemies you will make while exploring the galaxy and exploding their homeworlds.
Iron Marines Invasion$14.99
Prepare to take off, soldier! The galaxy needs your strategy! Prove your RTS expertise, explore an entire galaxy and defend it from a threatening invasion.
Block Tower TD 2$12.99
Block Tower TD 2 is a strategic game in the roguelike style with original innovations. Build worlds from blocks, choose random upgrades, each game will be unique.
Block Tower TD 2: PrologueFREE
Block Tower TD 2 is a strategic game in the roguelike style with original innovations. Build worlds from blocks, choose random upgrades, each game will be unique.
Space Engineers$19.99
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.
Force of Nature 2: PrologueFREE
Force of Nature 2: Prologue is an introduction to the world of the main game. Explore one of the many worlds and uncover its mystery. This game combines the genres of Survival, Sandbox, Action, Adventure, RPG, Strategy and Resource Management
Force of Nature 2: Ghost Keeper$15.99
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
Unreal Element World$5.99
Unreal Element World is a Roguelike overlook game;
Alien Planet Survival$7.99
You drift in space, land on a random planet, collect materials, survive, develop civilization technology, conquer more planets, idle automation factory game
Edge of Space$14.99
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.
Dig or Die$11.99
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.
Space Bob vs. The Replicons$14.99
Help clueless Bob survive his first day of work in this procedurally generated, planet hopping, gravity simulator. Haul loot and resources back in to orbit while simultaneously fighting off a full scale alien invasion in this rogue-lite survival hybrid quite unlike anything you've played before.
Kingdom Rush Origins - Tower Defense$14.99
Command your elven army and defend mystical lands from sea serpents, evil sorcerers, and wave after wave of gnoll tribesman, all with the help of brand-spankin’ new towers, heroes, and spells to fend off every last baddie.
Eternal Elements$9.99
Melt sand, shatter glass, and rust iron in this epic elemental tower defense game. Combine elemental effects to beat powerful materials. Use cunning strategy and wit to take on impossible challenges. Unlock new abilities and power as you embark on this difficult journey.
GemCraft - Frostborn Wrath$12.99
The epic tower defense dark fantasy journey continues! Create powerful gems with various abilities and take on the battle against an endlessly flowing army of monsters, and face the growing darkness as you fight your way back towards the Spiritforge.