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

StarbaseSim
Single-player alternative to Time Dilation Lab — playable solo, no multiplayer required. Shares Simulation with Time Dilation Lab.
Operate the Starship space launch system and learn how to catch a rocket to understand what it takes to colonize Mars in this ever-evolving simulation of SpaceX Starbase Texas.
- 2

Signs and Seasons Explorer
Single-player alternative to Time Dilation Lab — playable solo, no multiplayer required. Shares Simulation with Time Dilation Lab.
Explore time and space as you learn about astronomy and earn stars to buy overlays for the Earth and Sun and control the passage of time. Soon you will be able to simulate and observe Earth/Sun correspondences from any age and perspective as you use keyboard and mouse controls to fly through space.
- 3

Skyos
Single-player alternative to Time Dilation Lab — playable solo, no multiplayer required. Shares Simulation with Time Dilation Lab.
SKYOS is a real-time 3D space simulation where Earth, satellites, constellations, weather imagery, and orbital events evolve in sync with the living sky, while cinematic Earth-to-Moon missions unfold through real-time launch windows and orbital transfers.
- 4

Voyager 2
Single-player alternative to Time Dilation Lab — playable solo, no multiplayer required. Shares Simulation with Time Dilation Lab.
Launch the Voyager space probe to the furthest depths of the Solar System! Use gravity to slingshot around planets and scan, orbit, or land on targets to earn stunning replays of your accomplishments.
- 5

Stargazer Simulator
Single-player alternative to Time Dilation Lab — playable solo, no multiplayer required. Shares Simulation with Time Dilation Lab.
A first-person astronomy simulator built on real astronomical data. Set up, align, and operate your telescope as the sky changes with location, date, and time. Use star charts and bright stars to find targets, then observe the Moon, planets, and faint, distant deep-sky objects through the eyepiece.
- 6

Spaceflight Simulator 2
Single-player alternative to Time Dilation Lab — playable solo, no multiplayer required. Shares Simulation with Time Dilation Lab.
Build rockets and fly them around the Solar System in this realistic aerospace sandbox. Attempt landings, build space stations, drive rovers, perform spacewalks, explore alien worlds, and get your crew home safe.
- 7

Meco Rocket Simulator
Single-player alternative to Time Dilation Lab — playable solo, no multiplayer required. Shares Simulation with Time Dilation Lab.
Meco Rocket Simulator is a realistic physics game where you play as an underpaid rocket scientist working for Mecodyne to design and test rocket engines without regard for your safety.
- 8

Rocket Science
Single-player alternative to Time Dilation Lab — playable solo, no multiplayer required. Shares Simulation with Time Dilation Lab.
Take part in a space program. Design spacecrafts and send them off to explore the vast expanses of space. Experience the real scale of the Solar system and the size of its celestial bodies.