Single-player games like Hollow Orbits 4x
Below are 8 single-player Steam games similar to Hollow Orbits 4x, 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 Hollow Orbits 4x page.
Ranked picks
- 1

Space Imperia 4X
Single-player alternative to Hollow Orbits 4x — playable solo, no multiplayer required. Shares Strategy with Hollow Orbits 4x.
A faithful digital adaptation of the acclaimed board game Space Empires 4X by GMT Games, beloved by wargamers for almost two decades. Command the rise of your civilization and the fall of others, all in one to two hours.
- 2

Nexus 5X
Single-player alternative to Hollow Orbits 4x — playable solo, no multiplayer required. Shares Strategy with Hollow Orbits 4x.
eXplore, eXpand, eXploit, eXterminate, EXPRESS. All of the depth, diplomacy, conflict and conquest of a turn-based 4X epic but played in fast-paced 60-minute competitive sessions. Play Solo or Multiplayer for 2-8 players.
- 3

Galactic Civilizations III
Single-player alternative to Hollow Orbits 4x — playable solo, no multiplayer required. Shares Strategy with Hollow Orbits 4x.
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.
- 4

Warhammer 40,000: Gladius - Relics of War
Single-player alternative to Hollow Orbits 4x — playable solo, no multiplayer required. Shares Strategy with Hollow Orbits 4x.
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

Battlestar Galactica Deadlock
Single-player alternative to Hollow Orbits 4x — playable solo, no multiplayer required. Shares Strategy with Hollow Orbits 4x.
In Battlestar Galactica Deadlock™ you’ll take command of the Colonial Fleet in defense of the Twelve Colonies during the First Cylon War. Lead many different types of ships in this 3D tactical game. Every decision counts, your strategy will be vital – can you ensure mankind’s survival?
- 6

Pandora: First Contact
Single-player alternative to Hollow Orbits 4x — playable solo, no multiplayer required. Shares Strategy with Hollow Orbits 4x.
Pandora: First Contact is a science fiction 4X turn-based strategy game on a planetary scale. Our Earth has been exhausted and colonial attempts on other planetary bodies have been in vain. Finally, after decades of exploration, an interstellar probe has brought promise of a new world.
- 7

Hex of Steel
Single-player alternative to Hollow Orbits 4x — playable solo, no multiplayer required. Shares Strategy with Hollow Orbits 4x.
Hex of Steel is a refreshing WWII wargame covering all fronts featuring a certain amount of original mechanics. Fight in solo against finally a decent AI throughout Europe, Africa or the Pacific, or against a friend in the cross-platform PBEM or real time multiplayer. Coop is also an option!
- 8

Age of Wonders: Planetfall
Single-player alternative to Hollow Orbits 4x — playable solo, no multiplayer required. Shares Strategy with Hollow Orbits 4x.
Age of Wonders: Planetfall is the new strategy game from Triumph Studios, creators of the critically acclaimed Age of Wonders series, bringing all the exciting tactical turn-based combat and in-depth empire building of its predecessors to space in an all-new, sci-fi setting.