This is my recently completed Greybox for rooms 4-6 in my level using the Unreal Development Kit. The 4th room is a trap room that can be used to stop enemies, but also can stop you if you don't have the proper spell to cross the chasm. The 5th room is a secret room where you can obtain more powerful spells, and the 6th room is also a trap room, where you can burn the enemies that flood into it.