Games like Final Outpost: Definitive Edition
Games like Final Outpost: Definitive Edition include They Are Billions, Frostpunk, Oxygen Not Included, Manor Lords, and Kingdoms and Castles. We matched them by the tags players give Final Outpost: Definitive Edition on Steam (Strategy, Survival, Base Building, Real-Time, and Resource Management): closest matches first, and among equally close ones the better-known games.

They Are Billions
Shared: Strategy · Base Building · Survival

Frostpunk
Shared: Survival · Strategy · Resource Management

Oxygen Not Included
Shared: Survival · Base Building · Colony Sim

Manor Lords
Shared: Strategy · Base Building · City Builder

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

Infection Free Zone
Shared: Base Building · Strategy · Zombies

IXION
Shared: Strategy · Survival · Resource Management

RimWorld
Shared: Survival · Base Building · Strategy

Endzone - A World Apart
Shared: Survival · Strategy · Base Building

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

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

Diplomacy is Not an Option
Shared: Resource Management · Base Building · Zombies

Banished
Shared: Strategy · Survival · Colony Sim

Empires of the Undergrowth
Shared: Strategy · Base Building · City Builder

Frostpunk 2
Shared: Strategy · Survival · Resource Management

Dwarf Fortress
Shared: Base Building · Strategy · Colony Sim

Prison Architect
Shared: Base Building · Strategy · Colony Sim

Farthest Frontier
Shared: Strategy · Resource Management · City Builder

Norland
Shared: Strategy · Base Building · City Builder

Space Haven
Shared: Survival · Base Building · Strategy

Ratopia
Shared: Base Building · Survival · Strategy

Going Medieval
Shared: Strategy · Base Building · Survival

Factorio
Shared: Base Building · Strategy · Resource Management

Rise to Ruins
Shared: Strategy · Survival · Colony Sim