Free games like Relativity Wars - A Science Space RTS
Below are 9 free-to-play Steam games similar to Relativity Wars - A Science Space RTS, 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 Relativity Wars - A Science Space RTS page.
Ranked picks
- 1
NGU IDLE
Free-to-play alternative to Relativity Wars - A Science Space RTS — no purchase or trial window. Shares Indie and Adventure with Relativity Wars - A Science Space RTS.
NGU Idle is a Free To Play Idle game that's full of weird humor, tons of upgrades and hundreds of hours of content! Try out NGU Idle today and experience the joy of Numbers Going Up!
- 2
Steam Engine Simulator
Free-to-play alternative to Relativity Wars - A Science Space RTS — no purchase or trial window. Shares Simulation with Relativity Wars - A Science Space RTS.
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
- 3
Landfall Archives
Free-to-play alternative to Relativity Wars - A Science Space RTS — no purchase or trial window. Shares Strategy and Indie with Relativity Wars - A Science Space RTS.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
- 4
SuchArt: Creative Space
Free-to-play alternative to Relativity Wars - A Science Space RTS — no purchase or trial window. Shares Indie and Adventure with Relativity Wars - A Science Space RTS.
Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!
- 5
Epic Battle Fantasy 3
Free-to-play alternative to Relativity Wars - A Science Space RTS — no purchase or trial window. Shares Indie and Adventure with Relativity Wars - A Science Space RTS.
Epic Battle Fantasy 3 is a silly turn-based JRPG, full of useless NPCs, rabid cats, childish humor, unreasonably large weapons, anime boobs, and other nonsense. And it's totally free!
- 6
The Riftbreaker: Prologue
Free-to-play alternative to Relativity Wars - A Science Space RTS — no purchase or trial window. Shares Strategy and Indie with Relativity Wars - A Science Space RTS.
The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.
- 7
The Last Sovereign
Free-to-play alternative to Relativity Wars - A Science Space RTS — no purchase or trial window. Shares Strategy and Indie with Relativity Wars - A Science Space RTS.
Explore a world torn between armies of lust and purity in which everything is more complex than it seems, deciding the fate of nations through might, politics, and finance. Every decision matters in an intricate saga that tracks thousands of variables.
- 8
The Life and Suffering of Sir Brante — Chapter 1&2
Free-to-play alternative to Relativity Wars - A Science Space RTS — no purchase or trial window. Shares Strategy and Indie with Relativity Wars - A Science Space RTS.
A narrative-driven hardcore RPG set in a gritty world where the gods are real. Set out on a challenging lifetime journey, where every choice you make has a price to pay and consequence to it. Will you become an inquisitor, a judge, or conspire against the old order? Dare to decide!
- 9
Orbit-X
Free-to-play alternative to Relativity Wars - A Science Space RTS — no purchase or trial window. Shares Strategy and Indie with Relativity Wars - A Science Space RTS.
Launch a rocket. Extend the Antenna. Set your internet service price and start making money. Oh and shoot down asteroids if they threaten your satellites.