Developer Tools

Art of Roads in Games

Why do roads in city-building games never feel quite right? The answer lies in a fundamental math problem.

Deep Dive

Roads are the fundamental fabric of city-building games, but creating realistic, satisfying networks has been a persistent challenge. From early titles to modern games like Cities: Skylines, developers have struggled with unrealistic curves and sharp ramps due to reliance on standard Bezier splines for road geometry. This mathematical limitation prevents the smooth, high-speed transitions and proper lane markings that real-world civil engineering demands, leaving a gap between simulation and reality.

Why It Matters

Better virtual road design leads to more immersive, educational, and satisfying city-building experiences for millions of players.