Free games like Earth 2140
Below are 8 free-to-play Steam games similar to Earth 2140, 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 Earth 2140 page.
Ranked picks
- 1
AirMech
Free-to-play alternative to Earth 2140 — no purchase or trial window. Shares Strategy with Earth 2140.
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!
- 2
Zero-K
Free-to-play alternative to Earth 2140 — no purchase or trial window. Shares Strategy with Earth 2140.
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.
- 3
Istrolid
Free-to-play alternative to Earth 2140 — no purchase or trial window. Shares Strategy with Earth 2140.
In Istrolid you design your own unique spaceships from a large number of parts to fit your strategy and play style. With no set units or factions you are free to create a fleet where each ship has its own balanced strengths and weaknesses, from basic fighters and bombers to hulking battleships and speedy destroyers.
- 4
IDUN Prologue - Frontline Survival
Free-to-play alternative to Earth 2140 — no purchase or trial window. Shares Strategy with Earth 2140.
Step into the arena with IDUN: Prologue, a thrilling slice of our full-length defense RTS where real-time strategy meets rogue-lite chaos. Fight your way through unique mission objectives with overwhelming swarms of enemies.
- 5
Imperius
Free-to-play alternative to Earth 2140 — no purchase or trial window. Shares Strategy with Earth 2140.
Imperius is an easy-to-learn, hard-to-master space RTS. Command devastating ships of the Imperius Navy and prove your loyalty by destroying everything in your path, no matter the cost.
- 6
TOXIKK™
Free-to-play alternative to Earth 2140 — no purchase or trial window.
FRAG LIKE IT'S 1999! TOXIKK plays as if today's military shooters never existed: Designed as a spiritual successor to the FPS giants of the late 90s and early 2ks, TOXIKK carefully evolves their mechanics with modern technology and fresh ideas elaborated with Arena-FPS enthusiasts.
- 7
Art of War: Red Tides
Free-to-play alternative to Earth 2140 — no purchase or trial window. Shares Strategy with Earth 2140.
Art of War: Red Tides is a fair multiplayer strategy game that allows different teams on the same platform (e.g. smartphones, PC, etc.) to battle against each other. You will encounter players around the world!
- 8
The Mims Beginning
Free-to-play alternative to Earth 2140 — no purchase or trial window. Shares Strategy with Earth 2140.
Experience a mystical journey with the Mims in this strategic god-like adventure—build, grow, protect, and wield divine powers. Now it's completely free! Also check out our other story-rich fantasy game, The End of the Sun, where you become a tracker of mythical beings and unravel mysteries.