Games like Helium Rain

X4: Foundations is a sandbox space simulator that allows players to explore, trade, fight, and build in a vast universe. Take control of your own space empire, where every decision from ship hiring to trade routes has a direct impact on your income and influence. With a dynamic narrative and a variety of factions to interact with, X4: Foundations offers a rich and immersive space experience.

"Starpoint Gemini 2" is a single-player space action RPG that allows players to explore, battle, and trade in a vast open world. Customize your spaceship and crew, engage in tactical combat, and navigate a complex storyline set in a dynamic universe. With a sandbox-style gameplay and various side missions, this game offers a rich and immersive experience for space exploration enthusiasts.

Distant Worlds 2 is a 4X space strategy game that offers a vast, procedurally generated universe to explore. Players can manage their space empires, engage in real-time tactical battles, and interact with intelligent alien races. With a focus on empire management and automated tasking, it provides a unique and in-depth gameplay experience for hardcore strategy fans.

Astrox Imperium is a single-player space strategy game that lets you explore, gather resources, build space stations, and manage interstellar politics. Engage in real-time combat with AI-controlled ships while navigating a vast, procedurally generated universe. Experience an immersive narrative with multiple branching storylines based on player choices.

"Starpoint Gemini Warlords" is a space-themed, real-time strategy game with RPG elements. Players can explore, mine, and combat in a vast open world, while also managing their own space station and fleet. Building and customizing ships, as well as forming alliances, are key features in this expansive game.

"Void Destroyer 2 is a open-world space sandbox game set in a desolate asteroid field, where you must survive by engaging in combat, managing tactics, and making strategic decisions. Start from humble beginnings and rise to power as a mercenary, pirate, bounty hunter, or entrepreneur, building your own trading or mining business. The game offers a wide range of freedom for players to choose their own path to domination, including the option to fight hard or negotiate your way to the top." NO INFORMATION AVailable about release date or developer/publisher.

"X3: Terran Conflict" is a space-themed simulation game set in the year 2938, where players can experience the final chapter of the X-Trilogy. The game features the largest X Universe, with the addition of a new faction, the Terrans, and over 100 new spaceships and weapon systems. It boasts more jobs, non-linear missions, and a re-designed user interface for a comfortable control experience. Players can also engage in large-scale battleship boarding.

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.

Evochron Legacy is a single-player or multiplayer sci-fi simulation game, focusing on combat, trade, and exploration. The game features advanced space flight mechanics, detailed spacecraft management, and a variety of objectives, including battles, racing, mining, and building stations. With good story, great mechanics, unique atmosphere, and long-distance travel using jump drives, Evochron Legacy is a fulfilling space adventure, but be prepared for some grinding.

VoidExpanse is a science fiction action-RPG set in deep space, allowing players to explore procedurally-generated galaxies, engage in real-time combat, and interact with dynamic factions. The game features complex mechanics for mining, trading, and character customization, as well as a meaningful storyline and options for both single and multiplayer gameplay. Upgrade your ship, complete missions, and advance through diverse skill-trees in this open-world space adventure.