Games like SpaceEngine on Steam
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Xsyon - Prelude
Xsyon is a player driven apocalyptic fantasy sandbox MMORPG, set in a living and evolving environment. Players create the world they want to live in as they form tribes, construct towns, shape landscapes, create quests, hunt, farm, gather, build societies and develop a New World.
Starcom: Nexus
Suddenly thrown into an unknown galaxy, you must explore, fight or befriend aliens and transform your ship from a small survey vessel into a powerful battlecruiser to unravel the mystery of the forces that brought you here and find your way home.
Tower Unite
PLAY, CREATE, PARTY! Tower Unite is a community-based virtual world party game with online games, entertainment, activities, and absolutely NO microtransactions.
X2: The Threat
X²: The Threat is of a new generation of space simulator games, you play the role of Julian Gardna who continues the story set by X: Beyond The Frontier. The updated graphics engine gives the universe a fresher feel with newly designed ships and stations adding to the complexity of the universe.
A Webbing Journey
Adorable spider chaos! Swing around the house, weave crazy structures, play with physics-based objects, and pull off chores with nothing but your webs and your wits in this madcap sandbox adventure.
Toaster Arena
Toaster Arena is a first person multiplayer arena shooter where players battle it out on different maps and game modes. Use Advanced movement to traverse obstacles and gain the advantage on the battlefield.
Little Witch in the Woods
Little Witch in the Woods tells the story of Ellie, an apprentice witch. Explore the mystical forest, help the charming residents, and experience the daily life of the witch.
Spaceflight Simulator
In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds.
ZED ZONE
A great catastrophe has come, and you, who are on duty, crash and trapped in a Zed Zone. There are zombies and monsters everywhere, In order to escape, by collecting materials, upgrading skills, building shelters, defeating zombie waves and mysterious mechs, chasing a glimmer of hope.
Soulash 2
Soulash 2 is a sandbox RPG roguelike with a procedurally generated open world, simulated history, skill-based progression system, customizable abilities, material-based crafting, building, trading, and the possibility of total mayhem. Will you save your world or destroy it?
Amazing Frog?
Amazing Frog? is the original open world buffet of bonkers physics sandbox mayhem. For one to four players.
Salt 2: Shores of Gold
Salt 2 is an open world pirate game focused on exploration, crafting, survival, and RPG elements. Sail an endless sea with your ship as a mobile base. Discover islands full of quests, towns, caves, and secrets. Level up skills, craft powerful gear, hunt, fish, loot, and make your ship your own.
Sirius
Sirius Online is a unique, easy to play Space Action Shooter with ongoing progression. Join the Ranks of the Terran Reclaim Forces or the Sirius Colonial Council today and fight for your Faction! Explore forgotten battlefields, find Treasures, create an empire and rule the universe!
Party Quiz
Play a local Quiz game with your friends and family. Create your own Quiz using the Party Quiz Constructor or use the Steam Workshop to download one of the Quizzes made by the community. Test your knowledge!
TRYP FPV: Drone Racer Simulator
Fly freely and perfect your skills as an FPV pilot without the risk of breakage, with hyper-realistic visuals and flight sensations. Whether you're a beginner or an expert, TRYP FPV is the next-generation simulator that immerses you in the pure adrenaline of FPV drone flying.
ΔV: Rings of Saturn
A physics-based mining sim, set in the thickest debris field in Sol. Every action has a reaction, lasers are invisible without a medium, and your thrust is a potent weapon. Find trade, adapt your equipment to your playstyle, hire a crew to help. Unravel the mysteries of the rings, or just get rich.
Bot Wars
Bot Wars is an action RTS about managing a squad of kill-bots and their bases as you work to take over all the capture points across the map. Featuring corporate kill bot armies, ranging from a firearms and beverage manufacturer to a lovecraftian burger cult.
Slime Rancher 2
Continue the adventures of Beatrix LeBeau as she journeys across the Slime Sea to Rainbow Island, a land brimming with ancient mysteries, and bursting with wiggly, new slimes to wrangle in this sequel to the smash-hit, Slime Rancher.
Goat Simulator: Remastered
Goat Simulator Remastered is the latest in goat simulation technology. Your favorite chaotic sandbox is back and more beautiful than ever, with updated graphics, every DLC, and more bugs that you can shake a goat at. WASD to rewrite history.
Goat Simulator 3
Pilgor's baaack! Gather your herd and venture forth into Goat Simulator 3; an all-new (at least on Steam), totally realistic, sandbox farmyard experience. Invite up to three friends in local or online co-op, create carnage as a team, or compete in mini-games and then not be friends anymore.
Ertugrul of Ulukayin
Become a medieval warrior in this action-adventure game. Discover traditional myths and fight for your tribe. Mount your horse, sharpen your weapons and explore an ancient semi-open world.