Single-player games like Sylph
Below are 8 single-player Steam games similar to Sylph, 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 Sylph page.
Ranked picks
- 1

REDVERY SPACE™
Single-player alternative to Sylph — playable solo, no multiplayer required. Shares Simulation with Sylph.
Single-player, first-person spaceflight sim. Fly a fast, agile ship through dense asteroid fields. Scan anomalies and sell scientific data at Science Labs—just don’t crash: you’ll lose it. Hack probes and satellites to access hidden secrets, then jump through unstable wormholes before they collapse.
- 2

Low Earth Orbit Adventures
Single-player alternative to Sylph — playable solo, no multiplayer required. Shares Simulation with Sylph.
Low Earth Orbit Adventures is a chill space sim set in the near future where the space around Earth has become a frontier of science, commerce and diplomacy. Retrieve the Hubble, rescue astronauts, assemble space stations and many other missions in this realistic but friendly adventure.
- 3

sfsim
Single-player alternative to Sylph — playable solo, no multiplayer required. Shares Simulation with Sylph.
sfsim is a realistic 3D space flight simulator.Use an advanced single-stage-to-orbit space craft to take off, orbit the planet, perform reentry, and land back on Earth.sfsim features a true to scale Earth planet using NOAA elevation data and procedurally generated volumetric clouds.
- 4

Univoyager
Single-player alternative to Sylph — playable solo, no multiplayer required. Shares Simulation with Sylph.
Experience a 1:1 scale, procedurally generated universe with seamless exploration from planets to stars. Journey across the cosmos with zero loading screens and realistic Newtonian physics. Trade, fight, and survive in a post-apocalyptic galaxy where gravity is your only boundary.
- 5

Flight Of Nova
Single-player alternative to Sylph — playable solo, no multiplayer required. Shares Simulation with Sylph.
Flight of Nova is a simulator based on newtonian mechanics in which you control spacecraft in the Noren star system. You fly multiple types of spacecraft doing transport and search missions in an environment with realistic aerodynamics and orbital physics.
- 6

Final Orbit
Single-player alternative to Sylph — playable solo, no multiplayer required. Shares Simulation with Sylph.
Master the cockpit of highly realistic spacecraft in this Newtonian physics based sim. Take off from surface to space, plot a course between the planets and dock with space stations. Trade commodities or take shipping contracts to buy upgrades and optimize your build - every choice matters.
- 7

DarkSpase
Single-player alternative to Sylph — playable solo, no multiplayer required. Shares Simulation with Sylph.
Galaga meets Tie Fighter meets Elite Dangerous. A sci-fi starfighter combat sim with NASA-accurate Keplerian orbits. Voyage across the Solar System with real-time FTL. Engage Dregg swarms in dynamic PvE encounters. Outmaneuver invaders by pushing Newtonian physics to the limit at 150 m/s.
- 8

A-Spec First Assault
Single-player alternative to Sylph — playable solo, no multiplayer required. Shares Simulation with Sylph.
Fly corvette-class warships. Engage in combat operations against fighters, frigates, cruisers, and more dangerous foes. Choose the ships, weapons, and improvement modules, your group will deploy with. Use tactical command decisions to overcome dangerous encounters with unrelenting enemies.