Games like WildRoot
Games like WildRoot include Oxygen Not Included, Prison Architect, Kingdoms and Castles, Manor Lords, and RimWorld. We matched them by the tags players give WildRoot on Steam (Colony Sim, Base Building, Resource Management, Management, and Simulation): closest matches first, and among equally close ones the better-known games.

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

Prison Architect
Shared: Base Building · Colony Sim · Simulation

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

Manor Lords
Shared: Base Building · Simulation · Strategy

RimWorld
Shared: Colony Sim · Base Building · Management

Against the Storm
Shared: Base Building · Simulation · Strategy

Dwarf Fortress
Shared: Colony Sim · Base Building · Simulation

Frostpunk
Shared: Resource Management · Colony Sim · City Builder

Cities: Skylines
Shared: Simulation · Management · City Builder

Empires of the Undergrowth
Shared: Base Building · Simulation · Colony Sim

Factorio
Shared: Base Building · Resource Management · Sandbox

Workers & Resources: Soviet Republic
Shared: Base Building · Simulation · Strategy

Foundation
Shared: Simulation · Management · Resource Management

Norland
Shared: Base Building · Colony Sim · Simulation

Banished
Shared: Colony Sim · Simulation · Strategy

Ostriv
Shared: Colony Sim · Simulation · Strategy

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

Space Haven
Shared: Colony Sim · Base Building · Management

Timberborn
Shared: Colony Sim · City Builder · Base Building

Settlement Survival
Shared: Colony Sim · Management · Simulation

Captain of Industry
Shared: Base Building · Resource Management · Simulation

Cities: Skylines II
Shared: Simulation · Management · City Builder

Planetbase
Shared: Colony Sim · Base Building · Resource Management

Factory Town
Shared: Base Building · Resource Management · Colony Sim