Single-player games like Space Alliance: Frontier
Below are 16 single-player Steam games similar to Space Alliance: Frontier, 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 Space Alliance: Frontier page.
Ranked picks
- 1

Company of Heroes 3
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Strategy with Space Alliance: Frontier.
Company of Heroes 3 combines heart-pounding combat with deeper strategic choices in a stunning Mediterranean theatre of war. In Company of Heroes 3, every battle tells a story...what's yours?
- 2

Aliens: Dark Descent
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Strategy with Space Alliance: Frontier.
Drop into the gripping journey of Aliens: Dark Descent, a squad-based, single-player action game in the iconic Alien franchise. Lead your soldiers in real-time to stop a new and terrifying kind of Xenomorph outbreak on Planet Lethe.
- 3

Door Kickers 2: Task Force North
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Strategy and Indie with Space Alliance: Frontier.
Command military Special Ops Teams in gripping tactical combat against a Middle East-based terrorist network. Sequel to RockPaperShotgun's "Best Tactics Game of 2014".
- 4

AI War 2
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Strategy and Indie with Space Alliance: Frontier.
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.
- 5

Polaris Sector
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Strategy with Space Alliance: Frontier.
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.
- 6

Commandos: Origins
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Strategy with Space Alliance: Frontier.
ALARM! You have been selected for a mission which will shape the fate of the entire world. Witness the very beginning of the legendary elite WWII force in Commandos: Origins. The long-awaited sequel to the Commandos series brings you right back to the foundation of the real-time tactics genre.
- 7

Wargame: Red Dragon
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Strategy and Indie with Space Alliance: Frontier.
The new reference in RTS at its best! The Wargame series returns to duty, larger, richer and more spectacular than ever before. In Wargame Red Dragon, you are engaged in a large-scale conflict where Western forces clash against the Communist bloc.
- 8

Steel Division: Normandy 44
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Strategy with Space Alliance: Frontier.
Steel Division: Normandy is a tactical real-time strategy (RTS) game that pits players against AI enemies in a single-player campaign -- or against several opponents in massive 10-on-10 multiplayer battles.
- 9

Office Battle
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Indie with Space Alliance: Frontier.
Welcome to Office Battle! Many workers will lose their job because a layoff is happening very soon in your office. That is why "Big B" decided to organize a competition and the winners gets to keep his job. But don’t think that it will be easy.
- 10

Darkness Assault
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Indie with Space Alliance: Frontier.
The number of missing in the city increased. People talk about the experiments on human beings. And now, only you can figure out if it was true. Especially because you have no choice. Mysteriously, you find yourself in a terrible location 40 meters underground. Your name is Katrine, and you do not remember anything about your past.
- 11

Botology
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Indie with Space Alliance: Frontier.
A company is currently in development of robots for the new generation - Botology, conduct tests for a new system for the remote control of robots. The purpose of the company is to help future potential buyers explore the remote space systems.
- 12

Shift
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Strategy and Indie with Space Alliance: Frontier.
It's a fun puzzle game. You have to connect as many figures as possible together. Use yellow "shifters" to change direction of the line. Get more points for longer line.
- 13

Redemption: Saints And Sinners
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required.
Squad of professional soldiers was sent to scout distant space station. After the accident, that station were evacuated long ago and all the exits were blocked with power shields. But the incoming signal from there made the Commander concerned. Squad's ship were fired upon and the survivors woke up at the station.
- 14

ROMBY
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Strategy and Indie with Space Alliance: Frontier.
In ROMBY you will earn points by placing 4 and even more figures of one color in a straight line. Earn more points and open all hidden girls. Trust me it won't be easy.
- 15

Bad Day
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required.
Bad Day - an endless runner with unique combination of 2D graphics and 3D environment. Compete with players from all around the world. But do not forget that the difficulty increases as you progress through.
- 16

GG Puzzler
Single-player alternative to Space Alliance: Frontier — playable solo, no multiplayer required. Shares Indie with Space Alliance: Frontier.
GG Puzzler is a classic puzzle/mosaic game. You gonna need to build full picture of the girls out of small fragments using only small reference and your imagination.