To start a rumble instance, you must have at least 2,000 coins (normal mode) or 6,000 (hard). A minimum of five quests is required to activate a "dream" in Nightmare Zone. When starting a rumble, the bosses in the fight will be based on what the whole group can access. For example, if a player has completed every quest but a group member has completed only Lost City, Monkey Madness I, Witch's House, Haunted Mine and Tree Gnome Village, only the bosses from those five quests will be fought. The following quests are strongly recommended: