Games like KingForge
Games like KingForge include Oxygen Not Included, Banished, Kingdoms and Castles, Manor Lords, and RimWorld. We matched them by the tags players give KingForge on Steam (Open World, Survival, Colony Sim, Simulation, and Building): closest matches first, and among equally close ones the better-known games.

Oxygen Not Included
Shared: Colony Sim · Survival · Building

Banished
Shared: Colony Sim · Survival · Simulation

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

Manor Lords
Shared: Simulation · Strategy · Building

RimWorld
Shared: Colony Sim · Survival · Strategy

Dwarf Fortress
Shared: Colony Sim · Simulation · Strategy

Frostpunk
Shared: Survival · Colony Sim · Strategy

Against the Storm
Shared: Simulation · Strategy · Building

Foundation
Shared: Simulation · Strategy · Medieval

Stonehearth
Shared: Colony Sim · Survival · Building

Prison Architect
Shared: Simulation · Building · Colony Sim

Empires of the Undergrowth
Shared: Simulation · Strategy · Colony Sim

Life is Feudal: Forest Village
Shared: Colony Sim · Strategy · Survival

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

Settlement Survival
Shared: Colony Sim · Survival · Building

Norland
Shared: Simulation · Strategy · Colony Sim

Space Haven
Shared: Colony Sim · Survival · Strategy

Timberborn
Shared: Colony Sim · Building · Voxel

Ostriv
Shared: Simulation · Colony Sim · Strategy

Kenshi
Shared: Open World · Survival · Simulation

Factorio
Shared: Resource Management · Survival · Strategy

Dawn of Man
Shared: Survival · Colony Sim · Simulation

Farthest Frontier
Shared: Building · Strategy · Resource Management

7 Days to Die
Shared: Survival · Open World · Building