Single-player games like Gratuitous Space Battles 2
Below are 16 single-player Steam games similar to Gratuitous Space Battles 2, 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 Gratuitous Space Battles 2 page.
Ranked picks
- 1

Gratuitous Space Battles
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
The first ever auto-battler game, from way back in 2009Who needs backstory? Who needs resource-gathering? Diplomacy is so last year. Gratuitous Space Battles cuts right to the chase of sci-fi strategy games, and deals with large, completely unjustified space battles between huge opposing space fleets.
- 2

Star Ruler 2
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
Massive scale 4X-RTS set in space. Control hundreds of planets, manipulate galactic politics, research numerous advanced technologies, and command thousands of units and hundreds of planets in your quest for galactic dominance.
- 3

Battlefleet Gothic: Armada 2
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy with Gratuitous Space Battles 2.
Battlefleet Gothic: Armada 2 is the new real-time strategy game adapted from Games Workshop’s famous tabletop game that portrays the epic space battles of the Warhammer 40,000 universe.
- 4

Galactic Civilizations III
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy with Gratuitous Space Battles 2.
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.
- 5

Ceres
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
Take control of a squadron of ships in full 3D space combat. Explore, battle and trade your way through a pirate, machine and monster-infested solar system.
- 6

Stellar Warfare
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
Space RTS with base building and ship customization. Personal passion project. More than 200 available ships, weapons and modules to design your fleet with. Contains a small campaign, several single and multiplayer game modes and a coop game mode. Also contains Wave defense!
- 7

Particle Fleet: Emergence
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
Build and design your own fleets and stand opposed to the Particulate in this physics/strategy/RTS/fleet hybrid. Build partially destructible and self repairing ships that interact with enemies less controlled by some scripted logic and more driven by a real time massive physics particle simulation.
- 8

Homeworld Remastered Collection
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Simulation with Gratuitous Space Battles 2.
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.
- 9

Stellaris
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Simulation with Gratuitous Space Battles 2.
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.
- 10

Democracy 3
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
Have you ever wanted to be president? or prime-minister? Convinced you could do a better job of running the country? Let's face it, you could hardly do a worse job than our current political leaders.
- 11

Democracy 4
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
Democracy 4 lets you take the role of President / Prime minister, govern the country (choosing its policies, laws and other actions), and both transform the country as you see fit, while trying to retain enough popularity to get re-elected...
- 12

Production Line : Car factory simulation
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
Production line is the new car factory management/simulation/tycoon game that pushes your organisational and entrepreneurship skills to the limit. Can you build the ultimate optimised, free-flowing car production line whilst beating the competition and still turn a profit?
- 13

Democracy 3 Africa
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
Democracy 3: Africa is the new standalone 're-imagining' of the hit political strategy game 'Democracy 3'. Set entirely in countries on the continent of Africa, D3:A puts you in charge of these countries and challenges you to stay in power whilst fixing each country's problems, improving the quality of life for your electorate, and...
- 14

Gratuitous Tank Battles
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
Set in an alternate history timeline where World War I never ends, you are the commander of allied forces fighting right up to the year 2114.
- 15

Democracy 2
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
On Tuesday, November 6th Americans will vote to shape the future of their country. Why wait? Start shaping your country's future now in Democracy 2.
- 16

Kudos 2
Single-player alternative to Gratuitous Space Battles 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Gratuitous Space Battles 2.
Kudos is a turn-based game that puts you in control of a single character and manages their life from age 20 to 30. You get to pick their friends, their job, and how they spend their free time, but there is a catch! You can only choose to do one thing each day, or two at the weekends.