Games like Retrofire

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.

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.

"RODINA" is a single-player action game with an intriguing story, splendid gameplay, stellar graphics, and perfect music. It features a procedural solar system with four planets, 50 major asteroids, and 45,000 minor asteroids, creating a spectacular atmosphere. Discover Xeno Bases and Mines with interiors that are constructed and decorated procedurally, adding to the game's uniqueness.

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.

Cortex Command is a real-time and turn-based strategy game set in a 2D world. Command your faction's troops, construct buildings, and manage resources to defeat your enemies. The game features destructible environments, customizable units, and a variety of weapons to choose from. Your goal is to conquer your opponent's base and eliminate their cortex, the core of their brain-like neural network.

Pilot your ship in the seamless open world made of space, planets, and more. Find new ships and equipment, find allies and beat all the enemies in this open source space shooter! Destination Sol is a free-to-play hardcore space arcade/RPG. You start as a pilot of a small fighter ship on the edge of a star system, and you're free to explore the game world, land on planets, fight with enemies, upgr…

SpaceBourne is a single-player Role Playing game with an intriguing story and fabulous gameplay, set in a vast universe with over 100 Solar Systems, 400 planets, and 37 space stations. Players have the freedom to mine, salvage, hunt, explore, trade, and engage in various activities with the goal of acquiring and customizing ships and weapons. Despite some bugs, the game offers an immersive experience with its impressive visuals and amazing soundtrack.

Avorion is a sandbox space simulation game that lets you build your own space ships and explore a procedurally generated universe. Mine resources, trade goods, and engage in space combat while navigating political alliances and factions. Experience a dynamic world that evolves based on your actions and interactions with other players.

Ever dreamed of becoming a super hero that protects the city with your super powers? Undefeated makes that dream come true! Fly over the city to patrol the streets and look out for crimes or troubles. Use your unlimited powers to keep the city safe.

TerraTech is an open-world sandbox adventure where you design and build vehicles from various blocks to explore, scavenge, and battle across diverse environments. Featuring co-op and PvP multiplayer modes, stunning graphics, and a captivating soundtrack, it offers both creative freedom and intense combat challenges. Despite some bugs and grinding, its humor and replayability make for a fun, engaging experience.