What is the Purpose of the Coliseum?

There are two versions of the Coliseum: one to the far left of the Historia Crux and one that appears in line with the main story gates.

Far left Coliseum

This is used for DLC. Periodically, Square-Enix releases an opponent you can face in the Coliseum which allows you to collect their monster crystal. Currently, you can face the following opponents:

• Omega
• Lightning & Amodar
• Nabaat
• Ultros & Typhon
• Gilgamesh
• PuPu
• Snow
• Valfodr

Main story Coliseum

You take a short detour here to collect a fragment as part of the events that occur in Episode 3, Part II. While there, you can collect a number of treasure spheres.