Games like The Promethium Effect

Void Miner – Asteroids Roguelite is an incremental roguelite bullet hell where you mine asteroids, gather resources, and upgrade your ship to survive intense waves of asteroid belts. Starting with a basic ship, you strategically enhance your abilities through an upgrade tree to conquer increasingly challenging levels. Blast through hazards and aim for total destruction of asteroid fields.

Objects in Space is a modempunk stealth space-trading game set in Apollo, a huge cluster of star systems dozens of lightyears away from earth. You are a lonesome ship's captain, buying and selling wares in order to keep your bucket of bolts afloat and stay one step ahead of pirates, organized criminals, corrupt governments and shady laws.

In "Rings of Saturn" , mine for valuable minerals in the Saturn rings in 2273, but be prepared for a hard sci-fi experience with real physics and an unfolding mystery. The game is currently feature complete, with regular updates adding more content, ships, storylines, and upgrades. Players praise its immersive atmosphere, detailed ship systems, andoriginal soundtrack, despite it not being their usual game style.

Rewrite the Universe! Pilot an agile starfighter, upgrade it with randomized loot, and unleash mystical fate energy to alter the fabric of spacetime itself!

Navy Field 2 is the follow up to Navy Field, the original pioneer of Massively Multiplayer Strategic Online Naval Warfare. Cooperate with your team to maximize the potential of your vessel as you face off in large-scale naval battles. Challenge yourself to become the ultimate captain!

Space Commander: War and Trade is a single-player space-sim offering diverse campaigns from arcade shooter to sandbox RPG. Build and customize your fleet, choose from various career paths including mercenary, trader, or space pirate, and upgrade your commander skills to fit your unique playstyle. Engage in combat, trade, or piracy to gain experience and progress through the game.

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.

Space Pirates and Zombies is a top-down, open-world action game set in space. Assemble your own fleet of ships and engage in strategic combat against space pirates, zombie-infested ships, and other threats. Explore the galaxy, mine asteroids, complete missions, and upgrade your ships to build a powerful armada. The game features a dynamic campaign, procedurally generated galaxies, and a rich, emergent gameplay experience.

Cosmonautica is a single-player Science Fiction Simulation game with great gameplay, exceptional graphics, and a fantastic soundtrack. The game offers a humorous space trading and crew simulation experience in a procedurally generated galaxy, with diverse quests, pirate attacks, and unique crew members. However, it has issues with bugs that can affect gameplay.

"StarDrive is a single-player Science Fiction Real Time Strategy game with high-quality graphics, offering a sandbox experience for players to build and design peticular spaceships for tactical combat and exploration. However, the game is criticized for its lack of optimization and numerous bugs, as well as the requirement of grinding. The game boasts a modular approach to ship design and a real-time gameplay with a seamless zoom feature."