Top similar games like Chaos Theory:
Chaos Theory $13.99
Chaos Theory is an evolving virtual world set in a fantasy based reality. The 'Butterfly Effect' gameplay gives you a blend of RPG, RTS, and city building in a vast open sandbox environment. Manage all aspects to secure the future of your civilisation. You only have one life, so use it wisely...
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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.
Space Engineers 2$29.99
The ultimate space sandbox, reimagined. Unleash your creativity with powerful building tools, explore the mysterious Almagest system, and uncover its captivating story. Join the Early Access and shape the future of space engineering!
Cepheus Protocol$19.99
Cepheus Protocol is an Open World RTS Military Survival Game. Play as the CERC hunting Patient 0, maintain Quarantine camps, fight dangerous mutations & Rogue Civilian Combatants . There’s nobody else coming, it’s up to you now.
Starmancer$14.99
From a small 2-man team comes a unique space station management sim. Take on the role of an A.I commanding a lost space ark. Try not to let your crew run amok and wreck the place.
MyTavern$17.99
Design and create your own tavern. Make the space comfortable for guest to stay and rest the night away.
Live the Life$10.99
Live the Life is the first person life simulation game focused on the deep player's interaction with the environment. Design your apartment using advanced building features, visit stores to buy furniture, food and clothing you like, and more completely free content coming soon
Modbox$14.99
Modbox is a multiplayer game creation sandbox for Desktop+VR
The Doors of Trithius$14.99
The Doors of Trithius is an open-world RPG roguelike. Engage in tactical turn-based combat in a living world of warring factions, wandering behemoths, and ancient magic. Level your skills, cook, craft, and explore dungeons. Will you follow the story, or let adventure be your guide?
Grace Online$14.99
Grace Online is a 3D fantasy MMORPG featuring an immersive experience that allows the players to forge their own paths through exploration and discovery.
Badiya: Desert Survival$19.99
Badiya is a Sandbox Survival RPG set in the WWI era desert lands. Badiya challenges you to brave the sands, take part in wars, ply the spice routes, or hunt for treasure as you strive to fulfill your ambitions.
Triton Survival$14.99
Triton Survival is an open world survival game about exploration, construction, engineering, and fighting on planets. Embark on this interstellar adventure and conquer the galaxy. Are you ready?
SAELIG$14.99
SÆLIG is a game that blends together elements of simulation, strategy, RPG, and business management. Centred around the life of you and your family, you must try to survive and bring wealth and prosperity to your household.
This Land Is My Land$29.99
Experience the frontier as a chief of a Native American tribe and resist the onset of the settlers. Explore the vast world full of hostile humans and animals while defining your narrative through the decisions you make.
SkyBrew: Entropic Strategist$17.99
Experience entrepreneurship in a floating cloud cafe. Manage your flying cafe, customize construction, train staff, handle random events, and uncover the secrets of the commercial empire, growing from a small shop to the sky's brightest star.
Winter Survival$18.99
Dive into the ultimate winter survival experience and see if you can survive long enough for rescue to arrive. Experience our unique sanity system that takes survival to the next level.
Dead Matter$19.99
After a rampant viral outbreak causes global society to collapse, you must survive the harsh wilderness of the Canadian Rockies amidst vast hordes of Infected and rival survivors.
TaleSpire$24.99
TaleSpire is a beautiful way to play pen and paper RPGs online. Bring your stories to life and embark upon campaigns together with your friends, regardless of where you are in the world.
Planetes$9.99
In Planetes your aim is to survive, create and explore. You will need to harvest resources, in order to construct bases, spacecraft, and items. Protect yourself from other players by creating better spacecraft or a stronger base. Explore space, finding asteroids and planets to land on.
Off Course ELEMENTS of SPACE$9.99
2d pixel art, top down sci- fi space ship building, resource management simulation with some arcade, tower defense elements. You build spaceship, collect necessary resources and defend yourself against waves of enemies. Equip ship with: rockets, life support, electric system and weapons.
Stay Alive: Apocalypse$24.99
You ever played a Sandbox Survival Zombie RPG? You heard it right. In "Stay Alive: Apocalypse" we will offer you an indie zombie survival game which is in a sandbox, random generated world and presents RPG elements.
Drift City Underground$2.99
Driving/Drifting Simulation game with Arcady gameplay and 8 initial cars that can be unlocked, in a open world map with deep car customization and additional skins and roleplay features later on. Brilliant mechanics will make this game enjoyable and stunning graphics will settle for a AAA Indie game
Sandbox AnythingFREE
A creative building-like game, where the objective is to throw physics enabled objects to create structures to allow the objective of the level to be completed. Can be a very challenging puzzler or an easy, sit back and relax game. Includes built in Level Editor and extensive Multiplayer functionality.
Mechanization$8.99
Mechanization is a factory building game. Build huge production lines, utilizing an array of droppers, conveyor belts, smelters, upgraders & more! Upgrade the size of your factory & use factory modules to enhance your factory's efficiency.
Six Aspects$24.99
Six Aspects may be the first Same Time Strategy (STS) game melding the tactical nature of turn based systems with the challenging demand of real time strategy.
TaleSpire - Guest EditionFREE
TaleSpire - Guest Edition lets you join, build, and play any TaleSpire campaign where the party has seats available. Has an ally of yours bought you a seat at the table? This is how you join them.
SCUM$39.99
Traverse punishing environments, looting, crafting and evading the constant threats to your life. The unprecedented levels of character customization and progression are your ultimate tools for survival.
Mist Survival$10.99
MIST SURVIVAL is a Single-player, survival stealth sandbox game Players will experience the Apocalypse stimulation in the form of virus pandemic, the players have to deal with it to survive through the difficulties such as finding shelter and food, threats from the environment and climate: wild animals, bandits, infected, and dense mist t
Spire of Sorcery$19.99
Lead a party of runaway mages through the dangerous world of Rund. Discover alchemy. Master magic. Explore the land. Survive the challenges.
Project Zomboid$19.99
Project Zomboid is the ultimate in zombie survival. Alone or in MP: you loot, build, craft, fight, farm and fish in a struggle to survive. A hardcore RPG skillset, a vast map, massively customisable sandbox and a cute tutorial raccoon await the unwary. So how will you die? All it takes is a bite..
GRAV$19.99
GRAV is a sand box experience where you explore a multitude of planets, hunt strange alien creatures, build and defend outposts, craft weapons and armor, and attempt to survive against other players in a hostile environment.
BattleBeasts$4.99
Planet Shima attracts adventure seekers from all over the Galaxy BB-79 due to its unique resources. The mysterious effects on this planet made Artificial Intelligence of Shima aggressive towards all intelligent species of animals.
Underspace$19.99
The spiritual successor to Freelancer with a Lovecraftian, sandbox RPG twist. Explore a vast handmade universe with Day 1 mod support and a planned PvP/co-op multiplayer on the Early Access roadmap. You're going to need a bigger ship.
Solace Crafting$14.99
Embark on an adventure set in a fantasy survival RPG. Visit a borderless, open world where you manage resources to construct your base and new types of equipment to support your conquest.
Zector 7$9.99
Craft, Build and Fight alongside your friends across this deadly open-world. Use both modern day and sci-fi tech as you Loot, Harvest and Trade for resources, gear and vehicles in order to survive the wasteland.
Exotic Matter$19.99
A blend of Metroidvania adventure and procedural survival game, in Exotic Matter you will explore, craft, fight, solve puzzles and survive. As the sole survivor of a last-ditch expedition to an alien planet, your duty is to find a powerful alien material that could save Earth from destruction.
Dragon Cliff$9.99
Dragon Cliff is a Semi-Idle RPG game with deep and complex itemization/skill systems to support endless character builds. Players are to collect adventurers, kill monsters, advance talent trees, enchant/reforge equipment, discover scrolls and finally assemble the most powerful adventure team!
Echoes of Mayhem®$9.99
Echoes of Mayhem is an arpg roguelite soulslike. You'll fight through a randomized dungeon of monsters and bosses in an attempt to reforge the world. You'll score loot along the way and gather resources to upgrade your town and choose your own path with random dungeon perks.
Fragmented$9.99
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.
Stoneshard$24.99
Stoneshard is a challenging turn-based RPG set in an open world. Experience the unforgiving life of a medieval mercenary: travel across the war-torn kingdom, fulfill contracts, fight, mend your wounds and develop your character without any restrictions.
Dead Event$1.99
Dead Event is a indie RPG survival game in which the player grows up as a creature. The creature will grow bigger overtime and with interactions in-game also lose some growth on death. Form a colony or hunt alone, become part of a player-created ecosystem. Survive, eat or be eaten...
The Legendary Player - Make Your Reputation - OPEN BETA$1.99
Imagine a world where you can create your own legend. The Legendary Player – Make Your Reputation it’s a 2D RPG Top-Side Down with reputation building system who allows the player build his own history.
Isles of Adalar$19.99
Isles of Adalar is an open world single player/co-op fantasy RPG that can be played in first or third person. The game is one part RPG one part RPG maker as it ships with an integrated level editor and Steam Workshop support. Users can mod the existing content or create their own.
Freeman: Guerrilla Warfare$24.99
In the anarchic world of Freeman: Guerrilla Warfare, only the mightiest warlord rules. Start with a pistol and a few militias, you will set yourself on a wild and ambitious journey towards world domination. Enjoy the immersive combination of intense FPS and sandbox strategy.
Outlaws of the Old West$19.99
Outlaws of the Old West is a massively multiplayer survival MMO with a huge world, thousands of items and a modular building system. Survive the wild, build your own homestead, defeat villainous bandits and work with others to tame the Wild West.
Ninja Avenger Dragon Blade$14.99
Join the amazing adventure of Hayashi in an incredible ninja universe with legendary clans, ancient dragons, incredible ninja wars. Help our hero bring peace once again to these troubled mystical realms.
Plutocracy$24.99
The business simulator Plutocracy gives you the chance to become wealthy and powerful to take control over the world. Where policy, laws, officials and people are only the chess pieces how do you play your game?
Wayward$7.99
You awake to discover yourself no longer in the company of good men or a fine seafaring vessel. Treasure... you remember something about treasure. Wayward is a challenging turn-based, top-down, wilderness survival roguelike. Explore, build, and most importantly survive in these unforgiving lands.
Planet Centauri$14.99
Dive into an epic adventure alone or with friends! Explore hidden dungeons, capture and tame fearsome monsters, build and defend your village. Craft powerful weapons, master magical spells, and transform an planet into the cradle of a new civilization!
The Questing$0.99
The Questing is an action-RPG game set in the fantasy world. You can grow by hunting enemies using various weapons and skills that you like. Also, feel free to explore the wide world, discover new towns and cities, and take quests from NPCs around the world to solve them.
Underworld Re: Card$19.99
Japanese Anime Style X Roguelike Deck-building CCGReborn into Underworld As A Hero!"Underworld Re: Card" is a game that combines deck-building and Rogue-like elements. Players are reborn into various races to fight and explore in the fantasy world.
No One Survived$16.99
This is a multiplayer cooperative open world construction survival sandbox game, where you and your friends must find supplies and build shelters in this world. You have to keep an eye on your character's needs state at all times, a bad state is likely to lead to death.