Free games like Sins of a Solar Empire II
Below are 8 free-to-play Steam games similar to Sins of a Solar Empire 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 Sins of a Solar Empire II page.
Ranked picks
- 1
Indigo Park: Chapter 1
Free-to-play alternative to Sins of a Solar Empire II — no purchase or trial window.
Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.
- 2
Counter-Strike:Global Offensive
Free-to-play alternative to Sins of a Solar Empire II — no purchase or trial window.
Counter-Strike:Global Offensive (CS:GO) expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).
- 3
The Lab
Free-to-play alternative to Sins of a Solar Empire II — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 4
Cube Escape: Paradox
Free-to-play alternative to Sins of a Solar Empire II — no purchase or trial window.
The tenth Cube Escape follows the story of detective Dale Vandermeer who finds himself trapped in two different universes and needs to escape. Cube Escape: Paradox will be released together with the accompanying Paradox: A Rusty Lake Film.
- 5
DORONKO WANKO
Free-to-play alternative to Sins of a Solar Empire II — no purchase or trial window. Shares Simulation with Sins of a Solar Empire II.
『DORONKO WANKO』 is a DORONKO Action Game. In this game, You can become a cute, innocent Pomeranian, make your master's home messy and dirty. "Will the master be angry with me?" Don't worry. Because you are a sweet doggie.
- 6
Landfall Archives
Free-to-play alternative to Sins of a Solar Empire II — no purchase or trial window. Shares Strategy with Sins of a Solar Empire II.
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!
- 7
SuchArt: Creative Space
Free-to-play alternative to Sins of a Solar Empire II — no purchase or trial window. Shares Simulation with Sins of a Solar Empire II.
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!
- 8
Control, I'm Not Coming Back
Free-to-play alternative to Sins of a Solar Empire II — no purchase or trial window.
Control, I'm Not Coming Back is a short and emotional narrative game about a lost astronaut searching for a reason to keep going forward while facing the emptiness of space. Inspired by the Hopecore aesthetic, it’s a story about positivism, friendship and our human connection with Voyager 1.