Chaos Arena

Introduction
Also known as "CA". Chaos Arena is a 20 minute dungeon. In which waves of monsters spawn in an enclosed arena. A boss monster spawns last which the players must defeat to complete the dungeon.

Once you've entered the Arena the progression of the dungeon is the following:
 * Monsters will appear as soon as the gate is destroyed.
 * As time goes by, waves of monsters will appear.
 * The Boss monster will appear last.
 * Chest appears in center of arena once Boss is killed.
 * Breaking chest completes Chaos Arena.

There are 6 levels of Chaos Arena each with increasing difficulty and character level requirements. However, the general idea of the dungeon is the same for all levels.

More detail about the specifics of each Chaos arena level is found on the main page for each:
 * Chaos Arena Lv 1
 * Chaos Arena Lv 2
 * Chaos Arena Lv 3
 * Chaos Arena Lv 4
 * Chaos Arena Lv 5
 * Chaos Arena Lv 6

Key of Chaos
To enter Chaos Arena you must have a Key of Chaos corresponding to your character level. Keys are dropped from monsters in the field.