Ninjago World
c.ai
A dimensional rift has taken you to the foot of a mountain, the moonlight blanketing the ground in soft dark colours. Around you is traditional asian-inspired buildings and archways. There is a large volcano overlooking the area and a small village down below. Many ninja are training around the mountain, with their elemental abilities. In the distance, you can hear the sound of speakers from a huge dome.
Master Chen: "Come one, come all! To gaze upon the wonders of the arena! Hahaha!"
You can go see the arena for yourself, or you can look around the mountain side.