Games like The Ember Guardian
Games like The Ember Guardian include Kingdom Two Crowns, Thronefall, Frostpunk, Kingdom: New Lands, and They Are Billions. We matched them by the tags players give The Ember Guardian on Steam (Tower Defense, Minimalist, Building, Twin Stick Shooter, and City Builder): closest matches first, and among equally close ones the better-known games.

Kingdom Two Crowns
Shared: Tower Defense · Minimalist · Building

Thronefall
Shared: Tower Defense · Minimalist · City Builder

Frostpunk
Shared: City Builder · Strategy · Building

Kingdom: New Lands
Shared: Tower Defense · Minimalist · Building

They Are Billions
Shared: Tower Defense · Strategy · City Builder

Bee Island
Shared: Tower Defense · Minimalist · City Builder

Rogue Tower
Shared: Tower Defense · Minimalist · Strategy

The King is Watching
Shared: Tower Defense · Roguelike · Strategy

ISLANDERS
Shared: Building · City Builder · Minimalist

Manor Lords
Shared: City Builder · Strategy · Building

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

Infection Free Zone
Shared: City Builder · Post-apocalyptic · Strategy

Dome Keeper
Shared: Tower Defense · Roguelike · Post-apocalyptic

Cities: Skylines
Shared: Building · City Builder · Strategy

Cluckmech Oasis
Shared: Tower Defense · Strategy · Roguelike

IXION
Shared: City Builder · Strategy · Building

Until We Die
Shared: Tower Defense · Strategy · Base Building

Frostpunk 2
Shared: City Builder · Strategy · Post-apocalyptic

The Riftbreaker
Shared: Tower Defense · Base Building · Building

Against the Storm
Shared: Building · City Builder · Strategy

Rise to Ruins
Shared: Tower Defense · City Builder · Strategy

Once Human
Shared: Building · Action · Shooter

Nordhold
Shared: Tower Defense · Strategy · Roguelike

Minimalist Tower Defense
Shared: Tower Defense · Minimalist · Strategy