Delta Rector City

Delta Rector City is a island, floating in space. First, you have to find a Downtown Metro station, locate the Delta Rector City portal room and fill the portals with twelve diamonds, then you will find yourself in Delta Rector City. There are passive Delta Man and Happy-Land's current boss, the Delta Monster. Be careful, because if you are in Delta Rector City, there is no back until you either kill the Delta Monster or die. There are skyscrapers, made of emeralds and on top of the emerald skyscrapers are Delta Crystal. Once you killed the Delta Monster, a monster egg will be here with a exit portal, made out of plastic.