Single-player games like Interstellar Transport Company
Below are 11 single-player Steam games similar to Interstellar Transport Company, 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 Interstellar Transport Company page.
Ranked picks
- 1

Distant Worlds: Universe
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
Distant Worlds is a vast, pausable real-time 4X space strategy game. Experience the full depth and detail of turn-based strategy, but with the simplicity and ease of real-time, and on the scale of a massively-multiplayer online game.
- 2

Avorion
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
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.
- 3

Interstellar Rift
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
Interstellar Rift is an open world starship simulator with an emphasis on ship construction and multi-player interaction. Survive in a hostile galaxy with your own custom designed and constructed starship. Invite other players to join your crew or fight them across the galaxy!
- 4

AI War 2
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
The most devious and acclaimed artificial intelligence in strategy gaming is better than ever. A grand strategy/RTS hybrid that reverses many conventions of both genres. Take territory without attracting attention, build your empire with care, and adapt to an ever-evolving galactic battleground.
- 5

Polaris Sector
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
Can anyone build an empire in a place like this? Other factions are naturally suspicious of newcomers and may wage war at the first sign of unidentified craft. Here, a natural death is an uncommon luxury.
- 6

Solar Expanse - Space Exploration Manager
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
Explore the Solar System. Mine and drop asteroids. Colonize and terraform. Lead the space race and compete with other corporations on your way to profit. Watch the expansion of human race over the centuries.
- 7

Solargene
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
Take Command of a Space Corporation in the Sci-Fi Simulator Solargene! Manage personnel, design and develop colonies and orbital stations across the solar system! Mine resources, establish logistics, research cutting-edge technologies, trade, and complete missions
- 8

X4: Foundations
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
Your journey to building a vast space empire begins behind the controls of a single ship. Explore, trade, fight, and build as you rise to command fleets, stations, and entire economies in a living, fully simulated universe that reacts to every decision.
- 9

Railroad Tycoon II Platinum
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required.
Includes Railroad Tycoon II and the expansion The Second Century It can take you from New York to South Africa. It can take you from the year 1804 to the year 2000. It can take you from penniless manual laborer to powerful multi-millionaire.
- 10

Stellaris
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities.
- 11

World VR Competition
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required.
The ultimate VR party game! Invite your friends over and go for the gold in this thrilling game of international competition. Or challenge the world records and leaderboards in singleplayer!