Single-player games like ERA ONE
Below are 12 single-player Steam games similar to ERA ONE, 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 ERA ONE page.
Ranked picks
- 1

Calyx
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy and Early Access with ERA ONE.
A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?
- 2

Space Reign
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy with ERA ONE.
An indie space-sim and strategy game featuring ship and fleet combat mixed with RTS elements. Complete contracts and Claim sectors for your faction in the near-future, where resource exploiting corporations are in a state of constant conflict over territory control.
- 3

Stellar Warfare
Single-player alternative to ERA ONE — playable solo, no multiplayer required.
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!
- 4

Warhammer 40,000: Dawn of War - Definitive Edition
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy with ERA ONE.
Warhammer 40,000: Dawn of War - Definitive Edition is the ultimate Dawn of War experience, featuring the original Dawn of War and all its expansions, along with enhanced visuals, an improved camera, and 64-bit platform support.
- 5

From Glory To Goo
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy and Early Access with ERA ONE.
From Glory To Goo is a Sci-Fi survival RTS set on an alien world. Serve as humanity's bulwark by establishing a colony and supporting your colonists still in orbit. But beware, for The Goo, a relentless and shape-shifting force approaches from all sides, even above and below.
- 6

The Scouring
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy and Early Access with ERA ONE.
The Scouring is an RTS with fast pace, high attention to detail and next generation experience. Lead humans or orcs in a Classic Mode or use one of powerful Heroes to fight for victory! Play alone or with friends. Use our modding tools to create maps and custom game modes! Join The Scouring!
- 7

Homeworld Remastered Collection
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy with ERA ONE.
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.
- 8

Battlefleet Gothic: Armada 2
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy with ERA ONE.
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.
- 9

Space Engineers
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy with ERA ONE.
Space Engineers is a sandbox engineering game where you design and build ships, stations, and planetary bases in a fully destructible environment. Explore planets and space, mine resources, survive hazards, and engage in combat alone or with friends in Creative or Survival modes.
- 10

NavalArt
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy and Early Access with ERA ONE.
Design your own warships, equip them with a variety of armament, and bring them out to the ocean!
- 11

Sins of a Solar Empire II
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy with ERA ONE.
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.
- 12

Star Wolves
Single-player alternative to ERA ONE — playable solo, no multiplayer required. Shares Strategy with ERA ONE.
Star wolves is a 3D space RPG with deep strategy and tactical elements. The game thrusts players into a world of freelance space hunters in the XXI-XXII century A.D. during a time of political crisis for the all-powerful Empire and the three mega-corporations that control all the known worlds.