Numerun

The Colina Umerun as depicted on the Rojo Rollers' Marbula One poster

Numerun is a city known as the "newest old" city in the world. Its territory has been settled for over 1,000 years but was discovered by settlers nearly 500 years ago. The settlers shared goods from their side of the world with Numerun, leading to a competitive economy unseen in the city's history. This led to immense growth for the city over the next few hundred years, becoming one of the most diverse, economical and intellectual cities in the world.

The ancient city center of Numerun, Numerun Antigua, was preserved throughout this growth, making it one of the main tourist attractions of the city. It is known for its red buildings, which the Rojo Rollers are named after. Another of the city's tourist attractions is the Colina Umerun, a centuries old artificial hill created for marble racing. Numerun is also home to multiple universities, at which the members of the Rojo Rollers used to work. The city is also home to the Surculo, the most popular marble sports competition south of Marblopolis, as well as the Rojo Rollers' stadium.