Colosseum is an island in the First Sea designed for players around Lv. 250-300. It is also home to the First Sea’s Friendly PvP arena, where players can battle each other without normal PvP consequences.

The island is a fairly large grassy area with scattered trees and rocks. The outer section of the island has lighter-colored grass, while the central area features darker grass, creating a distinct layered appearance.

At the center stands a massive stone colosseum decorated with multicolored banners hanging along its sides. The Friendly PvP arena is located inside this structure. A wide stone path connected by a ramp links the colosseum directly to the island’s dock.