Shroomchitect

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.

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

Planet Alpha is an adventure set in a living alien world where you have the ability to manipulate the daytime. To survive on this strange planet you will have to be observant of how the environment and the wildlife behaviour changes depending on the time of day.

The Last Journey is an ultimate post-nuclear exploration game in which you travel the universe to find a new planet suitable for mankind to live on after the Earth was destroyed in a nuclear war.

Sol 0 is a real time strategy game where you establish the first Martian colony. From the first human footprints on Martian soil to a thriving and self-sustaining colony, Sol 0 imagines a near future using technology that could be available within the next few decades. Make use of minerals and resources across the Martian surface to expand from the first exploratory rover to an independent frontier.

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

Rise of Industry is a strategic tycoon game that puts you in the shoes of an early 20th-century industrialist. Build and manage your growing empire in a living, breathing, and procedurally generated world that is constantly evolving and adapting to your playstyle.

Academia : School Simulator is a management game that lets you design, construct, and manage the high school of your dreams! As the school Principal, watch your students as they get bullied, find love, flunk exams, and basically just try to get through the roller-coaster ride that is high school. Will you offer the best teachers and facilities or cheap out and build giant classrooms with a 1:100 student to teacher ratio? It's all up to you!

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

Hytale combines the scope of a sandbox with the depth of a roleplaying game, immersing players in a procedurally generated world where teetering towers and deep dungeons promise rich rewards throughout their adventures. Hytale supports everything from block-by-block construction to scripting and minigame creation, delivered using easy to use and powerful tools.