Games like Aztecs: The Last Sun
Games like Aztecs: The Last Sun include Frostpunk, Manor Lords, Kingdoms and Castles, Farthest Frontier, and Against the Storm. We matched them by the tags players give Aztecs: The Last Sun on Steam (City Builder, Survival, Resource Management, Immersive Sim, and Colony Sim): closest matches first, and among equally close ones the better-known games.

Frostpunk
Shared: City Builder · Survival · Resource Management

Manor Lords
Shared: City Builder · Strategy · Base Building

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

Farthest Frontier
Shared: City Builder · Resource Management · Building

Against the Storm
Shared: City Builder · Strategy · Building

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

Oxygen Not Included
Shared: Survival · Colony Sim · Resource Management

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

Ostriv
Shared: City Builder · Colony Sim · Strategy

Banished
Shared: City Builder · Survival · Colony Sim

IXION
Shared: City Builder · Survival · Resource Management

Norland
Shared: City Builder · Strategy · Colony Sim

Prison Architect
Shared: Building · City Builder · Colony Sim

Settlement Survival
Shared: City Builder · Survival · Colony Sim

Cities: Skylines
Shared: City Builder · Building · Strategy

Dwarf Fortress
Shared: Colony Sim · City Builder · Base Building

Dawn of Man
Shared: City Builder · Survival · Colony Sim

They Are Billions
Shared: Survival · Colony Sim · City Builder

Foundation
Shared: City Builder · Resource Management · Strategy

RimWorld
Shared: Survival · Colony Sim · Base Building

Endzone - A World Apart
Shared: City Builder · Survival · Strategy

Patron
Shared: City Builder · Survival · Colony Sim

Timberborn
Shared: City Builder · Colony Sim · Building

Space Haven
Shared: Survival · Colony Sim · Base Building