Games like Rustbound
Games like Rustbound include Kingdoms and Castles, Oxygen Not Included, Prison Architect, Cities: Skylines, and Frostpunk. We matched them by the tags players give Rustbound on Steam (Simulation, Crafting, Management, Colony Sim, and Economy): closest matches first, and among equally close ones the better-known games.

Kingdoms and Castles
Shared: Colony Sim · Simulation · Management

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

Prison Architect
Shared: Simulation · Colony Sim · Management

Cities: Skylines
Shared: Simulation · Management · Economy

Frostpunk
Shared: Colony Sim · Resource Management · Simulation

Manor Lords
Shared: Simulation · Management · Base Building

Shop Titans
Shared: Crafting · Management · Shop Keeper

Potion Craft: Alchemist Simulator
Shared: Crafting · Simulation · Management

Retro Rewind - Video Store Simulator
Shared: Simulation · Management · Casual

Dressmaker
Shared: Crafting · Simulation · Cozy

Captain of Industry
Shared: Simulation · Resource Management · Management

The Wandering Village
Shared: Simulation · Management · Colony Sim

Factorio
Shared: Crafting · Resource Management · Management

Cities: Skylines II
Shared: Simulation · Management · Economy

Gas Station Simulator
Shared: Simulation · Management · Economy

Against the Storm
Shared: Simulation · Management · Colony Sim

RimWorld
Shared: Colony Sim · Management · Simulation

Supermarket Simulator
Shared: Simulation · Management · Economy

Mad Games Tycoon
Shared: Simulation · Management · Economy

Dwarf Fortress
Shared: Simulation · Colony Sim · Management

Empires of the Undergrowth
Shared: Simulation · Colony Sim · Management

Workers & Resources: Soviet Republic
Shared: Simulation · Management · Economy

Norland
Shared: Simulation · Colony Sim · Management

Factory Town
Shared: Colony Sim · Management · Resource Management