Free games like Colony : Part I The Moon Castle
Below are 9 free-to-play Steam games similar to Colony : Part I The Moon Castle, 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 Colony : Part I The Moon Castle page.
Ranked picks
- 1

Indigo Park: Chapter 1
Free-to-play alternative to Colony : Part I The Moon Castle — no purchase or trial window. Shares Action and Indie with Colony : Part I The Moon Castle.
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 Colony : Part I The Moon Castle — no purchase or trial window. Shares Action with Colony : Part I The Moon Castle.
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
![UNBEATABLE [white label] — Steam game cover](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1290490/header.jpg?t=1736770503)
UNBEATABLE [white label]
Free-to-play alternative to Colony : Part I The Moon Castle — no purchase or trial window. Shares Action and Indie with Colony : Part I The Moon Castle.
A young girl learns a song. An exclusive side-story set in the world of D-CELL GAMES' upcoming rhythm-adventure.
- 4

93, Kuindzhi
Free-to-play alternative to Colony : Part I The Moon Castle — no purchase or trial window. Shares Indie and Adventure with Colony : Part I The Moon Castle.
Kuindzhi, 93 is an atmospheric first-person narrative vignette about an 18-year-old boy from Donbas. The story takes us to March 2022, when the world changed forever — into a space where the past, fears, and doubts find their voice.
- 5

Landfall Archives
Free-to-play alternative to Colony : Part I The Moon Castle — no purchase or trial window. Shares Action and Indie with Colony : Part I The Moon Castle.
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!
- 6

Control, I'm Not Coming Back
Free-to-play alternative to Colony : Part I The Moon Castle — no purchase or trial window. Shares Indie and Adventure with Colony : Part I The Moon Castle.
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.
- 7

I MAED A GAM3 W1TH Z0MB1ES 1N IT!!!1
Free-to-play alternative to Colony : Part I The Moon Castle — no purchase or trial window. Shares Action and Indie with Colony : Part I The Moon Castle.
A top down twin stick zombie slaying shooter that you are sure to play again and again!
- 8

South Scrimshaw, Part One
Free-to-play alternative to Colony : Part I The Moon Castle — no purchase or trial window. Shares Indie with Colony : Part I The Moon Castle.
South Scrimshaw is the story of a newborn whale in a vast alien ocean. It is a richly illustrated experimental visual novel, written in the style of a nature documentary.
- 9

B.L.U.E.
Free-to-play alternative to Colony : Part I The Moon Castle — no purchase or trial window. Shares Indie with Colony : Part I The Moon Castle.
B.L.U.E. (Build, Launch, Upgrade, Evolve) is an multiplayer PVP space sandbox engineering simulator. As an BlueHeaven Aerospace Engineer, you design spaceships that follows real world physics, load it with maximum fire power, and test it against your best friends. Note: mind the heat!