Free games like Space Empires I
Below are 8 free-to-play Steam games similar to Space Empires I, 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 Space Empires I page.
Ranked picks
- 1
Die in the Dungeon: Origins
Free-to-play alternative to Space Empires I — no purchase or trial window. Shares Strategy with Space Empires I.
Fight your way through a mysterious dungeon in this deck-building, turn-based roguelike game where you don't use cards, but DICE! Deal with enemies by combining dice on your board, boost their effects with magical relics, and discover the story behind Die in the Dungeon!
- 2
The Riftbreaker: Prologue
Free-to-play alternative to Space Empires I — no purchase or trial window. Shares Strategy with Space Empires I.
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.
- 3
PlanetSide 2
Free-to-play alternative to Space Empires I — 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
Limbus Company
Free-to-play alternative to Space Empires I — no purchase or trial window.
As the Executive Manager of Limbus Company, lead your group of twelve Sinners, venture into the buried facilities of Lobotomy Corporation, and lay claim on the Golden Boughs.
- 5
Dota Underlords
Free-to-play alternative to Space Empires I — no purchase or trial window. Shares Strategy with Space Empires I.
Hire a crew and destroy your rivals in this new strategy battler set in the world of Dota. Introducing Season One: Explore White Spire and earn rewards on the Battle Pass. Pick from several different game modes, play on your own or with friends, and take advantage of crossplay on PC and mobile.
- 6
Fallout Shelter
Free-to-play alternative to Space Empires I — no purchase or trial window.
Fallout Shelter puts you in control of a state-of-the-art underground Vault from Vault-Tec. Build the perfect Vault, keep your Dwellers happy, and protect them from the dangers of the Wasteland.
- 7
Freddy Fazbear's Pizzeria Simulator
Free-to-play alternative to Space Empires I — no purchase or trial window.
Start your own Freddy Fazbear's Pizzeria with Freddy Fazbear Pizzeria Simulator!
- 8
Cell to Singularity - Evolution Never Ends
Free-to-play alternative to Space Empires I — no purchase or trial window.
The epic story of evolution, technology, humanity, and dinosaurs is yours to tap.