The series uses interactive features that appear in certain fighting arenas, called "Danger Zones". Fighters caught in a Danger Zone will take extra damage, giving the attacker a slight advantage. These environmental hazards can be anything from Falls to Explosives to Breakable Structures. If a fighter has low health, being trapped in a Danger Zone is more likely to knock them out than a normal attack, although in certain titles, elements such as falls cannot do this, and instead just leave the fighter with very low health.