Games like Seedling
Games like Seedling include Banished, Kingdoms and Castles, Manor Lords, Frostpunk, and Cities: Skylines. We matched them by the tags players give Seedling on Steam (Simulation, Strategy, Building, Economy, and City Builder): closest matches first, and among equally close ones the better-known games.

Banished
Shared: Strategy · Simulation · City Builder

Kingdoms and Castles
Shared: Simulation · City Builder · Strategy

Manor Lords
Shared: Strategy · Simulation · City Builder

Frostpunk
Shared: Strategy · City Builder · Building

Cities: Skylines
Shared: Simulation · Building · City Builder

Against the Storm
Shared: Simulation · Strategy · Building

Settlement Survival
Shared: Building · City Builder · Simulation

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

Farthest Frontier
Shared: Building · Strategy · City Builder

Ostriv
Shared: Strategy · Simulation · City Builder

Foundation
Shared: Simulation · Strategy · City Builder

Prison Architect
Shared: Simulation · Building · Strategy

IXION
Shared: Strategy · City Builder · Simulation

Cities: Skylines II
Shared: Simulation · Building · City Builder

Jurassic World Evolution
Shared: Simulation · Building · Strategy

Empires of the Undergrowth
Shared: Simulation · Strategy · City Builder

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

Dwarf Fortress
Shared: Simulation · Strategy · Colony Sim

Dawn of Man
Shared: Strategy · Simulation · City Builder

Norland
Shared: Simulation · Strategy · City Builder

Anno 1800
Shared: Strategy · Simulation · City Builder

Jurassic World Evolution 2
Shared: Building · Simulation · Strategy

Stonehearth
Shared: Building · City Builder · Colony Sim

Life is Feudal: Forest Village
Shared: Strategy · City Builder · Simulation