Games like Masterspace

"Osiris: New Dawn" is a sci-fi survival game where players explore and colonize alien planets. Gather resources, build bases, and advanced technology to survive against the harsh environment and alien creatures. Fight solo or with friends in online multiplayer mode to expand your territory and uncover the mysteries of the galaxy.

"Stars End" is a first-person, open-world survival game set in a procedurally generated universe. Gather resources, craft tools, and build bases to survive and explore the vast expanse of space. The game features day/night and weather cycles, as well as a variety of alien creatures and hazards to contend with. With its focus on exploration and survival, "Stars End" offers a unique and immersive experience for fans of the genre.

Planet Explorers is an open-world sandbox adventure game set on a distant planet. Players can build and customize their own tools, vehicles, and structures, while also gathering resources, completing missions, and fighting alien creatures. The game features a dynamic story generation system, allowing for a unique experience with each playthrough.

"Medieval Engineers" is a sandbox game set in the medieval era, focused on realistic engineering principles. Players can build various structures, such as castles and siege machines, using a variety of materials. The game also features a physics-based destruction system, allowing for realistic deconstruction and demolition of creations.

"Blockscape" is an unfinished role-playing game that offers single-player and multi-player modes with fully procedurally generated worlds. You must gather materials, craft, and build to create a new civilization, with NPCs moving in and working for you if you provide them with beds and food. Despite good graphics and music, expect missing features and bugs as the game is still in early access development.

Planet Nomads is a sci-fi sandbox game that allows you to build and manipulate structures in a procedurally generated alien world. Survive by gathering resources, crafting tools, and creating technology to protect yourself from the planet's dangerous wildlife. Experience a blend of survival, engineering, and exploration as you navigate through different biomes and uncover the mysteries of the planet.

StarMade is a free-to-play Sci-Fi Shooter game, currently in Alpha, that offers single-player, local multi-player, and online co-op/PvP gameplay. Players can support the developers by purchasing the game, which will grant access to future updates and exclusive features such as blueprint hosting and multiple skin uploads. Despite some optimization issues and bugs, the game offers plenty of humor and grinding for space exploration and battles.

In "Outpost Zero," players lead a team of robotic assistants to build, automate, and defend a base on the alien planet of Gaiya. The goal is to prepare for future human colonists seeking to escape Earth, all while competing with other corporations for profit and survival. Players must balance resource management, base defense, and combat against alien creatures and pirate raiders to succeed .

"Fragmented" is a Sci-Fi Shooter game with exceptional visuals, featuring single-player, multi-player, and co-op options. After a failed colonization mission, you must survive on an alien planet, harvest resources, craft weapons, and regain lost skills to ensure humanity's survival. Players can host their own servers, adjust settings, and choose between easy or harsh gameplay modes, with a focus on survival and skill progression.

Empyrion: Galactic Survival is a space survival adventure game that lets players build and pilot their own space ships and stations. Explore, mine, and fight across procedurally generated planets and alien structures in a vast, open universe. Experience a mix of sandbox construction, survival, and combat gameplay, with a heavy emphasis on player freedom and creativity.