Orbital Prime is one of the planets in GRIP. It features purpose-built roads almost exclusively. Races take place in and near the urban sprawl.
Essentially a floating metropolis, this planet is one big city, devoid of landscape, vegetation or wild life. What it lacks in natural colour, it makes up for with its Red Sun district and flashy advertisements. Orbital Prime is mostly a seedy, corrupt place full of outcasts and criminals, and would make the perfect place to drop a race if it weren't for the affluent oligarchs running the show with the local militia rewarded well to assert their will.