Single-player games like DarkHelm
Below are 8 single-player Steam games similar to DarkHelm, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like DarkHelm page.
Ranked picks
- 1

Avorion
Single-player alternative to DarkHelm — playable solo, no multiplayer required. Shares Simulation with DarkHelm.
A procedural co-op space sandbox where players can build their own space ships out of dynamically scalable blocks. Fight epic space battles, explore, mine, trade, wage wars and build your own empire to save your galaxy from being torn apart by an unknown enemy.
- 2

Rank: Warmaster
Single-player alternative to DarkHelm — playable solo, no multiplayer required. Shares Simulation with DarkHelm.
Stranded on Mars with next to nothing, build a city, assemble a fleet, and expand your empire to survive a hostile solar system in this new take that combines elements of space combat and RTS inspired by the classics.
- 3

Stellar Shipyard
Single-player alternative to DarkHelm — playable solo, no multiplayer required. Shares Simulation with DarkHelm.
Stellar Shipyard is a space colony sandbox where you design modular ships and stations, and automate resource production using drones and workers. Let the automated systems fly even the most improvised designs. Face rival factions and threats solo, or alongside friends as allies or rivals.
- 4

Starship EVO
Single-player alternative to DarkHelm — playable solo, no multiplayer required. Shares Simulation with DarkHelm.
Mine and craft your way to orbit, build your own starship and explore a vast, dangerous galaxy alongside your crew. For players who love a meaningful survival progression, a unique and elegant building system, and epic space-opera scale.
- 5

Arvoch Alliance SE
Single-player alternative to DarkHelm — playable solo, no multiplayer required. Shares Simulation with DarkHelm.
Advanced First Person Space Flight Combat Simulation.
- 6

Archean
Single-player alternative to DarkHelm — playable solo, no multiplayer required. Shares Simulation and Early Access with DarkHelm.
Gather resources, craft components, build vehicles, and code their logic in a physics-driven engineering sandbox and full scale space sim.
- 7

QANGA
Single-player alternative to DarkHelm — playable solo, no multiplayer required. Shares Simulation with DarkHelm.
QANGA: 750 years after humanity's fall, you must survive in a shattered world where Earth itself demands vengeance. Tear through the fabric of space to face the Voss, awaken the ancient civilisation, and dare to challenge the Sanglines, born from the bowels of a world that condemned you.
- 8

Cosmoteer: Starship Architect & Commander
Single-player alternative to DarkHelm — playable solo, no multiplayer required. Shares Simulation and Early Access with DarkHelm.
Design and simulate the starships of your dreams! Command your ship or fleet in epic battles and manage your crew while exploring a dangerous galaxy. Play alone or with friends, test your ships in online PvP, and let your imagination reach for the stars!