The Olympus Coliseum is the second world of Kingdom Hearts. It is the site of several battle tournaments.
Getting started
When first arriving at the coliseum, you will meet Phil. He'll sign you up for the preliminary trails--which you would have to pass in order to enter regular tournaments.
The Battle with Cloud
Before you actually could participate in the tournaments, you must first defeat Cloud and Cerebrus as part of the story. Phil would then allow you to participate in the exams.
The tournaments
1.Phil Cup 2. Pegasus Cup 3. Hercules Cup 4. Hades Cup 5. Gold Match 6. Platinum Match