Arcterra is one of two planets in the Alimbic Cluster, and the second planet after Alinos. It is an icy world, with a network of caverns beneath the surface formed from geothermal activity. The areas on Arcterra are dominated by Alimbic ruins, many of which are guarded by security mechanisms and Alimbic sentry robots. This planet is frequented by the hunters Noxus and Trace.