Free games like Star Ruler 2
Below are 8 free-to-play Steam games similar to Star Ruler 2, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Star Ruler 2 page.
Ranked picks
- 1
SCP: Secret Laboratory
Free-to-play alternative to Star Ruler 2 — no purchase or trial window. Shares Indie with Star Ruler 2.
Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape.
- 2
Splitgate
Free-to-play alternative to Star Ruler 2 — no purchase or trial window. Shares Indie with Star Ruler 2.
Splitgate is a free-to-play, fast-paced multiplayer shooter that features player-controlled portals. This sci-fi shooter takes the FPS genre to a new dimension with its portal mechanics, delivering high-flying, multi-dimensional combat.
- 3
PlanetSide 2
Free-to-play alternative to Star Ruler 2 — no purchase or trial window.
PlanetSide 2 is an all-out planetary war, where thousands of players battle as one across enormous continents. Utilize infantry, ground and air vehicles, and teamwork to destroy your enemies in this revolutionary first-person shooter on a massive scale.
- 4
Cell to Singularity - Evolution Never Ends
Free-to-play alternative to Star Ruler 2 — no purchase or trial window.
The epic story of evolution, technology, humanity, and dinosaurs is yours to tap.
- 5
War Selection
Free-to-play alternative to Star Ruler 2 — no purchase or trial window. Shares Strategy and Indie with Star Ruler 2.
War Selection is a compelling RTS game featuring base building, resource extraction and warfare. Evolve from a stone age tribe to a distinct industrial nation with unique game mechanics and battle for supremacy with dozens of players on a unique procedurally generated map.
- 6
Endless Sky
Free-to-play alternative to Star Ruler 2 — no purchase or trial window. Shares Indie with Star Ruler 2.
Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.
- 7
AirMech
Free-to-play alternative to Star Ruler 2 — no purchase or trial window. Shares Strategy and Indie with Star Ruler 2.
AirMech® Strike is a fast paced Action-RTS game that can be played solo, coop, or competitively online. Earn Kudos and Experience in battle and unlock a wide collection of AirMechs and Units while you practice the perfect strategy to emerge victorious!
- 8
Zero-K
Free-to-play alternative to Star Ruler 2 — no purchase or trial window. Shares Strategy and Indie with Star Ruler 2.
With 100+ truly unique units, Zero-K is an RTS of freedom and creativity, tempered by a decade of refinement. Sculpt land into a castle and throw invaders off it with a Jugglenaut. Explore a massive campaign, solo or co-op. Hop online for epic 32 player battles or fast paced 1v1, on 100s of maps.