GlassBox is the revolutionary simulation technology that gives you the power to impact Sims lives, manage city-level simulation, and balance multiple cities at once. Every Sim, every car, every building has a purpose in SimCity. Sims go to work, purchase items, consume goods and live in a home (unless they’re homeless). GlassBox simulates real city behavior: Cars exhibit authentic traffic patterns, water actually travels down pipes, and fire spreads in realistic radiuses. What you see, is what we Sim. Your decisions affect the future of the city and the Sims living in it.