About Navisphere Studios
Simulation content for Tower Sim 3 and Cities: Skylines II
Our Mission
Making simulation games deeper — free, high-fidelity airport expansions for Tower! Simulator 3 and systems-driven mods for Cities: Skylines II, built by players for players.
On the aviation side we recreate real-world airports with accurate layouts and traffic so every Tower Sim 3 session feels like the real thing. On the city side, mods like EduLife turn a service building into a living institution with rankings, rivalries, and a history your city writes itself. Different genres, same standard: it has to hold up over hundreds of hours.
What We Do
Navisphere Studios builds two product lines under one roof. Tower Sim 3: freeware airport packages (KCLT, KLGB, LIPZ and more) with real procedures, terminals, and traffic. Cities: Skylines II: deep gameplay overhauls starting with EduLife, an education system with school rankings, district grades, athletics, and higher-education research.
We focus on immersion, realism, and long-term play for players and creators alike. Our mods are built to be extended — EduLife, for example, publishes an open naming-pool contract so anyone can add their own school names without touching our code.
Our Commitment
Every release goes through real research and live testing. Airports are studied down to taxiway systems, terminal configurations, and traffic patterns; mods are played for in-game years before they ship and are tuned from the feedback you leave in our Discord forums.
All of our content is provided as freeware to both communities — airports on this site, mods on Paradox Mods — so high-quality simulation content stays accessible to everyone.
Join Our Community
Controllers and mayors welcome — pick your game when you join and stay updated on every release