Single-player games like Solar Nations
Below are 9 single-player Steam games similar to Solar Nations, 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 Solar Nations page.
Ranked picks
- 1

Imperator: Rome
Single-player alternative to Solar Nations — playable solo, no multiplayer required. Shares Strategy with Solar Nations.
Dominate the classical Mediterranean in Imperator: Rome, a grand strategy game from Paradox Interactive. Navigate the dangerous waters of politics and diplomacy as you build up your provinces and conquer foreign lands. Now available with special content and the digital artbook.
- 2

Terra Invicta
Single-player alternative to Solar Nations — playable solo, no multiplayer required. Shares Strategy with Solar Nations.
An alien invasion has fractured humanity into seven ideological factions each with a unique vision for the future. Lead your chosen faction to take control of Earth’s nations, expand across the Solar System, and battle enemy fleets in tactical combat.
- 3

Europa Universalis IV
Single-player alternative to Solar Nations — playable solo, no multiplayer required. Shares Strategy with Solar Nations.
Rule your land and dominate the world with unparalleled freedom, depth and historical accuracy. Write a new history of the world and build an empire for the ages.
- 4

ENDLESS™ Space 2
Single-player alternative to Solar Nations — playable solo, no multiplayer required. Shares Strategy with Solar Nations.
ENDLESS™ Space 2 is a Strategic Space Opera, featuring the compelling “just one more turn” gameplay, set in the mysterious ENDLESS™ Universe. As the leader of your civilization, will you impose your vision and build the greatest stellar empire?
- 5

Sid Meier’s Civilization® VI
Single-player alternative to Solar Nations — playable solo, no multiplayer required. Shares Strategy with Solar Nations.
Expand your empire, advance your culture and go head-to-head against history’s greatest leaders. Will your civilization stand the test of time?
- 6

Old World
Single-player alternative to Solar Nations — playable solo, no multiplayer required. Shares Strategy with Solar Nations.
Old World is a revolutionary new historical strategy game where you lead your dynasty over generations of rule against rival kings and queens. Wage massive wars, manage your court, and build a dynasty — or watch your empire crumble to dust. What legacy will you leave behind?
- 7

Distant Worlds: Universe
Single-player alternative to Solar Nations — playable solo, no multiplayer required. Shares Strategy with Solar Nations.
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.
- 8

AI War 2
Single-player alternative to Solar Nations — playable solo, no multiplayer required. Shares Strategy with Solar Nations.
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.
- 9

Solar Nations 2
Single-player alternative to Solar Nations — playable solo, no multiplayer required. Shares Strategy with Solar Nations.
In this Grand Strategy game, you take control of the Solar System's Great Powers in 2092 and weather the storm of change as you navigate the uncertain waters of the future. Control the greatest military forces in the world and wage wars on an epic scale: outer space is yours to conquer!