Games like Fortifend
Games like Fortifend include Thronefall, Kingdom Two Crowns, They Are Billions, Rogue Tower, and Frostpunk. We matched them by the tags players give Fortifend on Steam (Strategy, Base Building, Tower Defense, City Builder, and Procedural Generation): closest matches first, and among equally close ones the better-known games.
Thronefall
Shared: Strategy · Tower Defense · City Builder
Kingdom Two Crowns
Shared: Tower Defense · City Builder · Base Building
They Are Billions
Shared: Base Building · Strategy · Tower Defense
Rogue Tower
Shared: Strategy · Tower Defense · Procedural Generation
Frostpunk
Shared: Strategy · City Builder · Resource Management
The King is Watching
Shared: Base Building · Tower Defense · Strategy
Manor Lords
Shared: Strategy · Base Building · City Builder
Pioneers of Pagonia
Shared: Strategy · Base Building · Resource Management
Farthest Frontier
Shared: Strategy · City Builder · Resource Management
Bee Island
Shared: Strategy · Tower Defense · City Builder
Against the Storm
Shared: Strategy · Base Building · City Builder
Mindustry
Shared: Base Building · Tower Defense · Strategy
Dwarf Fortress
Shared: Base Building · Strategy · City Builder
Rise to Ruins
Shared: Tower Defense · Strategy · City Builder
Dyson Sphere Program
Shared: Base Building · Resource Management · Building
Age of Empires III: Definitive Edition
Shared: Strategy · Base Building · City Builder
Tower Dominion
Shared: Strategy · Tower Defense · Base Building
Becastled
Shared: Strategy · Base Building · City Builder
Kingdoms and Castles
Shared: City Builder · Strategy · Resource Management
Border Pioneer
Shared: Strategy · Tower Defense · Base Building
Factorio
Shared: Base Building · Strategy · Resource Management
Emberward
Shared: Strategy · Tower Defense · Base Building
Workers & Resources: Soviet Republic
Shared: Strategy · Base Building · City Builder
Foundation
Shared: Strategy · City Builder · Resource Management