Single-player games like Gemini Wars
Below are 17 single-player Steam games similar to Gemini Wars, 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 Gemini Wars page.
Ranked picks
- 1
Starpoint Gemini Warlords
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Strategy with Gemini Wars.
Strategy from the front lines! Starpoint Gemini Warlords combines 3rd person capital spaceship combat with 4X strategy and RPG gameplay elements. Build mighty war fleets and send them into battle or lead them into combat yourself. Become the Warlord and conquer the Gemini system!
- 2
Sins of a Solar Empire: Trinity®
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Strategy and Indie with Gemini Wars.
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.
- 3
Distant Worlds: Universe
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Strategy with Gemini Wars.
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.
- 4
AI War 2
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Strategy and Indie with Gemini Wars.
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 Gemini Wars — playable solo, no multiplayer required. Shares Strategy with Gemini Wars.
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
Galactic Ruler
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Indie and Strategy with Gemini Wars.
Galactic Ruler offers real time strategy game play at both planetary level and in space! Lead your faction in diplomacy or conquest across a procedurally generated galactic map where any system might hold hostile enemies or resource riches. Develop advanced technologies to rule the galaxy!
- 7
Supreme Commander 2
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Strategy with Gemini Wars.
Includes 47 Steam achievements, leaderboards, and stats!
- 8
Terra Invicta
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Strategy with Gemini Wars.
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.
- 9
Sins of a Solar Empire II
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Strategy with Gemini Wars.
Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.
- 10
Descent: FreeSpace – The Great War
Single-player alternative to Gemini Wars — playable solo, no multiplayer required.
Volition's classic is back. Descent: FreeSpace is the quintessential old school space shooter. With a deep story, great graphics and engaging battles against fighters to capital ships it keeps you moving. Breakout that flight stick and enroll with the Grand Terran Alliance today.
- 11
Haegemonia: Legions of Iron
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Indie and Strategy with Gemini Wars.
From the makers of the award-winning Imperium Galactica 1 and 2 games, discover a powerful space-opera like RTS game.
- 12
Those Who Remain
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Indie with Gemini Wars.
As the lights go out, the embers of darkness are stoked in the sleepy town of Dormont. Confront uncomfortable horrors, keep your sanity in check and survive the night in this story-driven first-person psychological-thriller.
- 13
Syndrome
Single-player alternative to Gemini Wars — playable solo, no multiplayer required.
Syndrome, a sci-fi survival horror game that places you in a living hell inside a doomed starship. Find out what happened to your lost crew. Run. Hide. Fight. Survive.
- 14
Beneath
Single-player alternative to Gemini Wars — playable solo, no multiplayer required.
Beneath is a Lovecraft-inspired survival FPS. Scarce ammo, merciless enemies and a sense of the unknown combine in a 10+ hour, story-driven single player campaign, built for both veteran gamers and those seeking a challenging old school experience.
- 15
Mechs & Mercs: Black Talons
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Strategy and Indie with Gemini Wars.
You are the commander of the Black Talons company, currently stationed in the Oberon system. After an eventful campaign, the military Tzanar Union has overrun the planet of Genai and blocked all departure from the system: leaving you and the Black Talons stranded.
- 16
Orczz
Single-player alternative to Gemini Wars — playable solo, no multiplayer required. Shares Strategy with Gemini Wars.
Orczz is a fantasy tower defense game set in the fantasy Kingdom of Whiteleaf, famous for its delicious honey wine – the mead. The player controls the Knight Order of the Mug, protectors of Whiteleaf and the mead, who are once again called to defend the land against an invading horde of orcs.
- 17
Dead Stop - No Vacancy
Single-player alternative to Gemini Wars — playable solo, no multiplayer required.
One night at the Paradise Motel. One reporter who took a wrong turn. One thing certain: nobody checks out clean. A short retro horror inspired by 80s slasher films.