Starbase

Dude Simulator is an open world sandbox game. This is a life simulator. The main objective is to enjoy what you are doing.

Rising World is an open-world sandbox game with randomly generated, fully destructible environments. Starting with the most basic of tools, collect resources to survive in the wildness. Evolve your world to create one of the biggest cities of all time or a gigantic castle, or simply let your imagination run riot! If being creative is all too much, just connect with your friends and get them to help. Rising World is a procedurally generated world, with fully textures landscapes, over 200 different building materials, loads of tools and many other items to help you create OR destroy your world without any restrictions.

Force of Nature is an indie open world sandbox game with fighting, crafting, building and farming systems.

Hardcore medieval multiplayer sandbox with terraforming, free preset and modular building construction, rich crafting (smelting, forging, farming, animal breeding etc.), survival, no target physics based combat, original combat formation system and numerous other features. Taking place in the fictional medieval world, game imposes a realistic system of global politics, economy, and socialization.

Star Control: Origins is a science fiction action-adventure game that combines planetary exploration, diplomacy with alien races, and one-on-one ship-to-ship space battles. Players captain a starship, sending a lander to survey planets, gather resources, and examine artifacts, then spending those resources on new technologies, weapons, upgrades, and ships from other races. The top-down Fleet Battles pit two vessels against each other and can be played against the AI or in multiplayer. It is considered part of the Star Control series but takes place in a separate universe from the original games.

Miscreated is a multiplayer online hardcore survival game set in a post-apocalyptic future. You will need to survive against mutants, players, and even mother nature herself.

Dude Simulator 2 is an open world sandbox game. This is a life simulator. The main objective is to enjoy what you are doing.

Empyrion - Galactic Survival is a 3D open world space sandbox survival adventure. Build mighty ships, menacing space stations and vast planetary settlements to explore, conquer or exploit a variety of different planets and the allegedly empty space!

Satisfactory is a first-person factory simulation game set on an alien planet. Players take the role of a Pioneer, an employee of the megacorporation FICSIT Inc., tasked with harvesting natural resources and constructing increasingly complex automated production lines. The goal is to manufacture components for "Project Assembly," delivered via a space elevator to an orbital platform. The game features a hand-crafted open world spanning approximately 30 square kilometers across multiple biomes, a tiered technology progression system, cooperative multiplayer, and extensive logistics management through conveyor belts, pipelines, and vehicles.

A brand-new spaceship sandbox MMO set in an alternate New Eden, the sci-fi universe of Eve Online.