Games like Playcraft

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.

"Main Assembly" is a robot construction and design game that allows players to build robots of any shape or size, program their movements with visual programming, and test them in custom-built obstacle courses. Players can also collaborate with others to create shared worlds and compete in bot challenges. The game offers a "Starter Collection" of combat-ready machines for instant brawling.

"From The Depths" is a sandbox vehicle construction game where you can build and command battleships, planes, submarines, and more in intense battles. The game features a creative mode, a strategic campaign with eight factions, and a story mode. It also offers in-game planet, campaign, mission, and multiplayer map editors, as well as Steam workshop support for sharing your creations. Available on PC, Mac, and Linux.

"Homebrew - Patent Unknown" is a unique puzzle-platformer that challenges players to manipulate time and space. Using the Copybug tool, players can duplicate objects and manipulate their properties to solve puzzles and overcome obstacles. With its mysterious setting and innovative gameplay, "Homebrew - Patent Unknown" offers a fresh take on the puzzle genre.

"Starship EVO is a work-in-progress space sim that offers a creative building experience, allowing players to build and customize starships, space stations, and handheld weapons using a variety of tools and options. The game currently features engaging space battles and plans to add a survival mode in the future. A Server/Client framework is used for multiplayer, which requires port forwarding." less than 400 characters, more than 100 characters.

Onset is a massively multiplayer role-playing game that lets players create and customize their own experiences using over 400 Lua functions. These functions allow for the creation of game modes, spawning of various objects, and even customization of the user interface. With support for singleplayer and multiplayer modes, as well as the ability to host your own server, Onset offers a highly flexible and customizable sandbox experience.

"CodeSpells" is a simulation game that offers a variety of play modes, including single-player, local multi-player for up to 2 players, and player-versus-player. The game's development and community are still active, with a new focus on building an open-source platform for the creation of various games and experiences. There was a delay in updates between September 2017 and August 2020 due to the team seeking additional funding and taking care of personal needs.

Space Engineers is a sandbox game set in space, where players build, design, and maintain various types of space vessels and stations. It features both creative and survival modes, allowing players to either freely build and explore or survive in a hostile environment. The game also includes physics-based engineering and destruction, adding a layer of realism and challenge to space engineering.

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.