Single-player games like Perimeter
Below are 15 single-player Steam games similar to Perimeter, 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 Perimeter page.
Ranked picks
- 1

Earth 2160
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
After the destruction of the EARTH in 2150, the leaders of the Eurasian Dynasty escaped on board an evacuation fleet. Now they are fighting for the survival of the human species. Their base is one large building comprising of smaller variable parts.
- 2

Nexus - The Jupiter Incident
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
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

AI War: Fleet Command
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
"You are outgunned. You are massively outnumbered. You must win." These are your orders. Humanity has already fought its war against the machines -- and lost. AI death squads stand watch over every planet and every wormhole, the few remaining human settlements are held captive in orbiting bubbles, and the AIs have turned their...
- 4

Ground Control II: Operation Exodus
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
It’s 2741 and the universe is at war. The Terran Empire is laying siege to the NSA, a treaty of colonies that upholds freedom and democracy. After losing the battle in space, the NSA is forced to retreat to its last stronghold. Can you snatch victory from impending doom?
- 5

Sid Meier's Civilization®: Beyond Earth™
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
Sid Meier’s Civilization: Beyond Earth is a new science-fiction-themed entry into the award winning Civilization series. As part of an expedition sent to find a home beyond Earth, lead your people into a new frontier, explore and colonize an alien planet and create a new civilization in space.
- 6

Grey Goo
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
Fight for control of a frontier world. Gather resources, build your base, and command your forces in battle. Survive long enough to unleash your ultimate weapon - THE EPIC.
- 7

Polaris Sector
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
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.
- 8

Battlezone 98 Redux
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
One of the greatest sci-fi strategy games of all time returns with remastered visuals, online multiplayer and near unlimited mod content from Steam Workshop. Experience thrilling first person action and acclaimed RTS in this explosive alternate vision of the 1960s space race.
- 9

Total Annihilation
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
What began as a conflict over the transfer of consciousness from flesh to machines escalated into a war which has decimated a million worlds. The Core and the Arm have all but exhausted the resources of a galaxy in their struggle for domination.
- 10

Homeworld Remastered Collection
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
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.
- 11

Command & Conquer™ Remastered Collection
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
Command & Conquer and Red Alert are both remastered in 4K by the former Westwood Studios team members. Includes all 3 expansions, rebuilt multiplayer, a modernized UI, Map Editor, bonus footage gallery, and over 7 hours of remastered music.
- 12

Vangers
Single-player alternative to Perimeter — playable solo, no multiplayer required.
Mind-altering sandbox game that can be described as a racing role-playing adventure game with a complicated storyline. You’ll find a unique atmosphere, complete freedom and lots of gameplay hours to figure out what’s the game is all about.
- 13

PERIMETER: Legate Edition
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
Perimeter is a real-time strategy game with a destructible world. Utilize the environment for resource gathering and defense against enemies. Immerse yourself in the millennia-spanning history of the Chains of Worlds and lead a faction in the struggle for survival.
- 14

Perimeter: Emperor's Testament
Single-player alternative to Perimeter — playable solo, no multiplayer required. Shares Strategy with Perimeter.
The game expands the story of the original Perimeter in a vast singleplayer campaign.
- 15

Spanking Runners
Single-player alternative to Perimeter — playable solo, no multiplayer required.
Spanking Runners (Samogonki) - arcade racing in a bright and unusual world. Fight on the tiny moons of the SamoG planet for precious Samogian water! After all, you need to save the world from the robots that have captured it, turning your friends into Electrozombies!