Games like Megaquarium
Games like Megaquarium include Cities: Skylines, Cities: Skylines II, Planet Coaster, Planet Zoo, and Two Point Museum. We matched them by the tags players give Megaquarium on Steam (Simulation, Casual, Building, Sandbox, and Management): closest matches first, and among equally close ones the better-known games.

Cities: Skylines
Shared: Simulation · Building · Management

Cities: Skylines II
Shared: Simulation · Building · Sandbox

Planet Coaster
Shared: Simulation · Building · Sandbox

Planet Zoo
Shared: Simulation · Management · Building

Two Point Museum
Shared: Simulation · Casual · Building

Garry's Mod
Shared: Sandbox · Building · Casual

House Flipper
Shared: Simulation · Building · Casual

Game Dev Tycoon
Shared: Simulation · Management · Casual

Prison Architect
Shared: Simulation · Building · Sandbox

Startup Company
Shared: Simulation · Management · Casual

Jurassic World Evolution
Shared: Simulation · Building · Management

Two Point Hospital
Shared: Simulation · Building · Management

Transport Fever 2
Shared: Simulation · Management · Sandbox

Foundation
Shared: Simulation · Sandbox · Management

Mini Motorways
Shared: Simulation · Casual · Management

Jurassic World Evolution 2
Shared: Building · Simulation · Management

Two Point Campus
Shared: Simulation · Building · Management

Townscaper
Shared: Building · Sandbox · Casual

Kingdoms and Castles
Shared: Simulation · Management · Sandbox

Planet Zoo 2
Shared: Simulation · Casual · Sandbox

Tiny Glade
Shared: Building · Sandbox · Casual

My Dream Setup
Shared: Building · Simulation · Casual

Let's Build a Zoo
Shared: Simulation · Management · Sandbox

Supermarket Simulator
Shared: Simulation · Management · Building

