Single-player games like Perimeter: Emperor's Testament
Below are 11 single-player Steam games similar to Perimeter: Emperor's Testament, 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: Emperor's Testament page.
Ranked picks
- 1
Perimeter
Single-player alternative to Perimeter: Emperor's Testament — playable solo, no multiplayer required. Shares Strategy with Perimeter: Emperor's Testament.
Perimeter is an innovative Real-Time-Strategy game that pits players against each other or AI opponents in a life and death struggle to seize territory and establish crucial protective “perimeters.” Players will be introduced to the game’s unique terraforming feature, allowing them to move, build, construct and destroy the map...
- 2
PERIMETER: Legate Edition
Single-player alternative to Perimeter: Emperor's Testament — playable solo, no multiplayer required. Shares Strategy with Perimeter: Emperor's Testament.
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.
- 3
Earth 2160
Single-player alternative to Perimeter: Emperor's Testament — playable solo, no multiplayer required. Shares Strategy with Perimeter: Emperor's Testament.
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.
- 4
Homeworld Remastered Collection
Single-player alternative to Perimeter: Emperor's Testament — playable solo, no multiplayer required. Shares Strategy with Perimeter: Emperor's Testament.
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.
- 5
Sins of a Solar Empire®: Rebellion
Single-player alternative to Perimeter: Emperor's Testament — playable solo, no multiplayer required. Shares Strategy with Perimeter: Emperor's Testament.
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
- 6
Battlefleet Gothic: Armada 2
Single-player alternative to Perimeter: Emperor's Testament — playable solo, no multiplayer required. Shares Strategy with Perimeter: Emperor's Testament.
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.
- 7
Aliens: Dark Descent
Single-player alternative to Perimeter: Emperor's Testament — playable solo, no multiplayer required. Shares Strategy with Perimeter: Emperor's Testament.
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.
- 8
Homeworld: Deserts of Kharak
Single-player alternative to Perimeter: Emperor's Testament — playable solo, no multiplayer required. Shares Strategy with Perimeter: Emperor's Testament.
A ground-based RTS prequel to the classic Homeworld games. Assemble your fleet and lead them to victory on the shifting sands of Kharak in this compelling strategy game for PC from Blackbird Interactive.
- 9
Nexus - The Jupiter Incident
Single-player alternative to Perimeter: Emperor's Testament — playable solo, no multiplayer required. Shares Strategy with Perimeter: Emperor's Testament.
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."
- 10
Vangers
Single-player alternative to Perimeter: Emperor's Testament — 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.
- 11
Spanking Runners
Single-player alternative to Perimeter: Emperor's Testament — 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!