Single-player games like Tachyon Wars
Below are 9 single-player Steam games similar to Tachyon Wars, 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 Tachyon Wars page.
Ranked picks
- 1
Galactic Civilizations III
Single-player alternative to Tachyon Wars — playable solo, no multiplayer required. Shares Strategy with Tachyon Wars.
Build a civilization that will stand the test of time in the largest space-based strategy game ever! Choose from dozens of unique races and make a name for yourself across the galaxy through diplomacy, espionage, technological advances, and more.
- 2
Galactic Ruler
Single-player alternative to Tachyon Wars — playable solo, no multiplayer required. Shares Strategy with Tachyon Wars.
Galactic Ruler offers real time strategy game play at both planetary level and in space! Lead your faction in diplomacy or conquest across a procedurally generated galactic map where any system might hold hostile enemies or resource riches. Develop advanced technologies to rule the galaxy!
- 3
Polaris Sector
Single-player alternative to Tachyon Wars — playable solo, no multiplayer required. Shares Strategy with Tachyon Wars.
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.
- 4
Warhammer 40,000: Gladius - Relics of War
Single-player alternative to Tachyon Wars — playable solo, no multiplayer required. Shares Strategy with Tachyon Wars.
Warhammer 40,000: Gladius – Relics of War brings you to a world of terror and violence. Four factions will engage in a brutal war for dominance over the planet’s resources. In the first turn-based 4X strategy game set in Warhammer 40,000 you will lead one of four unique factions.
- 5
Shadow Empire
Single-player alternative to Tachyon Wars — playable solo, no multiplayer required. Shares Strategy with Tachyon Wars.
Shadow Empire is a deep turn-based 4X wargame with a unique blend of military focus, procedurally generated content and role-playing features. Players take the seat of the supreme ruler of a small nation, with the goal of reconquering a devastated planet.
- 6
ENDLESS™ Space - Definitive Edition
Single-player alternative to Tachyon Wars — playable solo, no multiplayer required. Shares Strategy with Tachyon Wars.
ENDLESS™ Space is a turn-based 4X strategy game, covering the space colonization age in the ENDLESS™ Universe, where you can control every aspect of your civilization as you strive for galactic domination.
- 7
AI War 2
Single-player alternative to Tachyon Wars — playable solo, no multiplayer required. Shares Strategy with Tachyon Wars.
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.
- 8
Sins of a Solar Empire®: Rebellion
Single-player alternative to Tachyon Wars — playable solo, no multiplayer required. Shares Strategy with Tachyon Wars.
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
- 9
Casual Spider Solitaire
Single-player alternative to Tachyon Wars — playable solo, no multiplayer required.
A Spider Solitaire card game, with hints.