Free games like Imperium Galactica II
Below are 8 free-to-play Steam games similar to Imperium Galactica II, 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 Imperium Galactica II page.
Ranked picks
- 1
Istrolid
Free-to-play alternative to Imperium Galactica II — no purchase or trial window. Shares Strategy with Imperium Galactica II.
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.
- 2
Galcon 2: Galactic Conquest
Free-to-play alternative to Imperium Galactica II — no purchase or trial window. Shares Strategy with Imperium Galactica II.
Galcon 2 is a demolition derby in space! Send swarms of ships from planet to planet to conquer the galaxy in this fast paced multiplayer strategy game!
- 3
IDUN Prologue - Frontline Survival
Free-to-play alternative to Imperium Galactica II — no purchase or trial window. Shares Strategy with Imperium Galactica II.
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.
- 4
Imperius
Free-to-play alternative to Imperium Galactica II — no purchase or trial window. Shares Strategy with Imperium Galactica II.
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.
- 5
Hades' Star
Free-to-play alternative to Imperium Galactica II — no purchase or trial window. Shares Strategy with Imperium Galactica II.
A unique space strategy game where thousands of players participate in one shared galaxy.
- 6
The Mims Beginning
Free-to-play alternative to Imperium Galactica II — no purchase or trial window. Shares Strategy with Imperium Galactica II.
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.
- 7
Stormgate
Free-to-play alternative to Imperium Galactica II — no purchase or trial window. Shares Strategy with Imperium Galactica II.
Stormgate is a free-to-play real-time strategy game with a full single-player campaign, 3-player co-op, and PvP versus modes on over 60 maps. Our Editor is also freely available for you to craft just about any custom game mode you can imagine. Join our development journey today!
- 8
VEGA Conflict
Free-to-play alternative to Imperium Galactica II — no purchase or trial window. Shares Strategy with Imperium Galactica II.
Stake your claim, command your fleets, and wage epic war in space.