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

Droneboi: Conquest
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
Build, fly, and battle in Droneboi: Conquest - the ultimate space sandbox game! Explore Conquest, engage in combat, and upgrade your ship. Start your space journey today!
- 2

Rail Estate
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
Outbid your rivals in auctions for key railway routes, build and upgrade your tracks to dominate the rail economy. Compete to create the most profitable network, balancing speed, capacity, and maintenance in a dynamic simulation
- 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

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.
- 5

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.
- 6

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.
- 7

Executive Assault 2
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required.
The RTS/FPS phenomenon has moved into space! Build your base on an asteroid, command fleets of starships for epic battles, pilot fighters, mine and trade resources, assemble robots to defend or assault other stations. Take sole command or share the glory as you fight for control of the quadrant.
- 8

Evochron Legacy SE
Single-player alternative to Interstellar Transport Company — playable solo, no multiplayer required. Shares Simulation with Interstellar Transport Company.
Advanced Space Flight, Combat, Trading, and Exploration Simulation. Set in a vast explorable universe, Evochron Legacy offers freeform gameplay with many diverse objectives and paths to choose from.
- 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!