hehe, not exactly... the levels are not over each other you guys... I\'m not sure if I\'m supposed to say this but if not Vengeance ZAP AWAY!!! The levels are tiered. None of them are actually over the one below. Relook at the Yliakum map from that perspective and you will understand. All the levels have some light... until the very bottom where the crystal\'s energy has disipated but is still sufficient for life.
