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

I Am a Rock
Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Strategy and Indie with Spacetime Dimension.
A rock's solar system odyssey.
- 2

Tower! Simulator 3
Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Strategy and Indie with Spacetime Dimension.
Immerse yourself in an ultra-realistic environment that brings the challenges of air traffic control right to your fingertips. With brand-new lighting system, intuitive 2D graphical user interface (GUI), improved voice recognition, 9 airports included, Tower! Sim 3 sets a new gold standard.
- 3

Edge Of Endless
Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Action and Strategy with Spacetime Dimension.
In a boundless desert, one finds oneself lost, compelled to continue onwards. Discover where they are headed. Along this journey, you'll uncover the story of (you), and see where their tale concludes. Hopefully
- 4

vTERM ATC Simulator
Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Strategy and Simulation with Spacetime Dimension.
vTERM: Your ultimate ATC radar simulator! Command a fictional airport with a 27/09 runway layout. Navigate realistic scenarios with precision using the STARS scope interface.
- 5

Discord Rich Me! Engine
Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Action and Indie with Spacetime Dimension.
A complete Discord Rich Presence customizer.
- 6

Atari 50: The Anniversary Celebration
Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Action and Adventure with Spacetime Dimension.
Atari 50: The Anniversary Celebration takes players on an interactive journey through 50 years of video games via interviews with designers, developers and industry leaders, documentary footage, product design documents, high-res original artwork, and a curated list of more than 90 playable games.
- 7

Empyrion - Galactic Survival
Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Strategy and Indie with Spacetime Dimension.
Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!
- 8

Galaxy on Fire 2™ Full HD
Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Action and Strategy with Spacetime Dimension.
A hyperdrive malfunction sends Keith T. Maxwell tumbling through space and time to fight for his life against a mysterious alien armada that is wreaking havoc.