Single-player games like O.R.B: Off-World Resource Base
Below are 13 single-player Steam games similar to O.R.B: Off-World Resource Base, 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 O.R.B: Off-World Resource Base page.
Ranked picks
- 1

Battlefleet Gothic: Armada (Classic)
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
Battlefleet Gothic: Armada is the RTS videogame adaptation of Games Workshop’s classic tabletop game, pitting the Chaos, Imperium, Eldar, and Orks against each other in visceral space-battles.
- 2

Nexus - The Jupiter Incident
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
Ambitious megacorporations monopolize the conquest of space and the colonization of the solar system. At the very edge of the solar system, the companies make a discovery that will shift the technological advantage and upset the balance. And so a new conflict is born: "The Jupiter Incident."
- 3

Supreme Commander
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
For a thousand years, three opposing forces have waged war for what they believe is true. There can be no room for compromise: their way is the only way. Dubbed The Infinite War, this devastating conflict has taken its toll on a once-peaceful galaxy and has only served to deepen the hatred between the factions.
- 4

Void Destroyer
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
Combining the best of space combat and real time strategy. Victory can be tactical, a dogfight or capital ship slugging match - depending on how you decide to achieve it. Space combat on a RTS scale with space sim savagery.
- 5

Homeworld Remastered Collection
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
Experience the epic space strategy games that redefined the RTS genre. Control your fleet and build an armada across more than 30 single-player missions. Choose unit types, fleet formations and flight tactics for each strategic situation.
- 6

Etherium
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
Etherium is a real-time strategy game set in a science-fiction universe, where three factions battle it out for a mysterious and rare resource known as ‘Etherium’.
- 7

Distant Star: Revenant Fleet
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
BAFTA award winning fleet-based RTS meets rogue-lite. In Distant Star: Revenant Fleet, build your fleet of up to 5 ships from a choice of 8 classes and traverse a randomly generated galaxy to defeat the Erebus Platform. NOW AVAILABLE ON MAC AND LINUX
- 8

WARSHIFT
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
Unique mix of Action, RTS and RPG gameplay elements that forms an innovative game genre. You can build base, manage troops, and then come down to keep your enemy at gunpoint in the dynamic battle and customize your main characters.
- 9

SC2VN - The eSports Visual Novel
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required.
SC2VN is a visual novel about the South Korean StarCraft 2 scene. You play as Mach, a foreign semi-pro trying to make it in eSports who soon learns that success in StarCraft takes more than in-game strategy.
- 10

Disciples II: Gallean's Return
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
Disciples II: Gallean's Return is a compilation edition that includes the base game, Disciples II: Dark Prophecy, plus the two standalone expansions Disciples II: Guardians of the Light and Disciples II: Servants of the Dark.
- 11

Disciples II: Rise of the Elves
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
The award-winning series Disciples introduced a milestone in the game's very successful history; the introduction of a new race: The Elves. The Elven Race added a new dimension to the game and added countless hours of gameplay. Now that series has expanded further with Disciples II: Rise Of The Elves.
- 12

Disciples Sacred Lands Gold
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
Disciples GOLD takes the phenomenal gameplay, stunning graphics, over 100 spells and a powerful scenario editor of Disciples and adds new scenarios and gameplay features that set the new standard in Turn-Based Strategy.
- 13

Nexagon: Deathmatch
Single-player alternative to O.R.B: Off-World Resource Base — playable solo, no multiplayer required. Shares Strategy with O.R.B: Off-World Resource Base.
Unfolding in the fourth millennium, this is a real-time, 3D, action-packed game of mortal arena combat that emphasizes tactics and features advancement and fortress building in a high stakes blood sport. Battle for freedom in a televised tournament in a completely destructible environment.