Free games like Oasis Mission: Colony Sim
Below are 8 free-to-play Steam games similar to Oasis Mission: Colony Sim, 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 Oasis Mission: Colony Sim page.
Ranked picks
- 1
Outpath: First Journey
Free-to-play alternative to Oasis Mission: Colony Sim — no purchase or trial window. Shares Indie with Oasis Mission: Colony Sim.
Outpath: First Journey is a prologue chapter of the main game, Outpath. An experimental clicker base building game. Craft, gather & manage resources, build your base and buy more islands to exploit and expand!
- 2
The Riftbreaker: Prologue
Free-to-play alternative to Oasis Mission: Colony Sim — no purchase or trial window. Shares Strategy and Indie with Oasis Mission: Colony Sim.
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
AdVenture Capitalist
Free-to-play alternative to Oasis Mission: Colony Sim — no purchase or trial window. Shares Indie with Oasis Mission: Colony Sim.
Welcome, eager young investor, to AdVenture Capitalist! Arguably the world's greatest Capitalism simulator!
- 4
Supermarket Together
Free-to-play alternative to Oasis Mission: Colony Sim — no purchase or trial window. Shares Indie with Oasis Mission: Colony Sim.
The multiplayer supermarket has arrived to your neighbourhood for free! Stock your shop space, unlock perks and franchises, hire employees or chase those pesky shoplifters. The more players, the more action!
- 5
Fallout Shelter
Free-to-play alternative to Oasis Mission: Colony Sim — 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.
- 6
Minion Masters
Free-to-play alternative to Oasis Mission: Colony Sim — no purchase or trial window. Shares Strategy and Indie with Oasis Mission: Colony Sim.
An addictive fast-paced hybrid of Card games & Tower-Defense. Play 1v1 - or bring a friend for 2v2 - and engage in epic online multiplayer battles full of innovative strategy and awesome plays! Collect 200+ cards with unique mechanics, all free!
- 7
Age of Empires III: Definitive Edition
Free-to-play alternative to Oasis Mission: Colony Sim — no purchase or trial window. Shares Strategy with Oasis Mission: Colony Sim.
Age of Empires III: Definitive Edition offers players a trial of this historical single & multiplayer RTS experience. *Note: To unlock all features of the game please see the “Base Game” product.
- 8
Kingdom: Classic
Free-to-play alternative to Oasis Mission: Colony Sim — no purchase or trial window. Shares Strategy and Indie with Oasis Mission: Colony Sim.
Kingdom is a 2D sidescrolling strategy/resource management hybrid with a minimalist feel wrapped in a beautiful, modern pixel art aesthetic.