Games like Oasis Mission: Colony Sim
Games like Oasis Mission: Colony Sim include Kingdoms and Castles, Frostpunk, Farthest Frontier, Manor Lords, and Captain of Industry. We matched them by the tags players give Oasis Mission: Colony Sim on Steam (City Builder, Colony Sim, Automation, Strategy, and Resource Management): closest matches first, and among equally close ones the better-known games.

Kingdoms and Castles
Shared: City Builder · Colony Sim · Resource Management

Frostpunk
Shared: City Builder · Strategy · Resource Management

Farthest Frontier
Shared: City Builder · Strategy · Resource Management

Manor Lords
Shared: City Builder · Strategy · Base Building

Captain of Industry
Shared: Automation · Resource Management · Strategy

Timberborn
Shared: City Builder · Colony Sim · Automation

Dyson Sphere Program
Shared: Automation · Base Building · Resource Management

Prison Architect
Shared: Colony Sim · City Builder · Strategy

Against the Storm
Shared: City Builder · Strategy · Base Building

They Are Billions
Shared: Colony Sim · Strategy · Base Building

Oxygen Not Included
Shared: Colony Sim · Base Building · Resource Management

Factorio
Shared: Automation · Resource Management · Base Building

Workers & Resources: Soviet Republic
Shared: City Builder · Strategy · Base Building

Factory Town
Shared: Automation · City Builder · Colony Sim

Stronghold Crusader HD (2012)
Shared: City Builder · Colony Sim · Strategy

Kingdoms Reborn
Shared: City Builder · Colony Sim · Strategy

IXION
Shared: City Builder · Strategy · Colony Sim

Dwarf Fortress
Shared: Colony Sim · City Builder · Strategy

The Crust
Shared: Automation · Colony Sim · Base Building

Empires of the Undergrowth
Shared: City Builder · Strategy · Colony Sim

Foundation
Shared: City Builder · Strategy · Resource Management

Norland
Shared: City Builder · Strategy · Colony Sim

Banished
Shared: City Builder · Colony Sim · Strategy

Stronghold: Definitive Edition
Shared: City Builder · Strategy · Colony Sim