'Your Library is still not functional; you must enlarge it!' - The Mentor (DK2)
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This version of Skybird Trill is the 20th and final level in at least one Dungeon Keeper prototype. The objective is simply to destroy the Blue Keeper; there is no Avatar or any mention of him.
This is a strange[editorialising] level with a large body of water in the centre with two Portals and some neutral creatures. There are two hero-controlled areas and an oddly-shaped[editorialising]Prison near Blue's dungeon. Blue has two gem faces, whereas the player's only source of income after depleting the Gold Seam to the East is the Gold and Gem Seams in the cavern towards Blue's dungeon. When you reach the Gems, you will be ambushed by a party consisting of three level 5 Wizards and a level 8 Thief. At first, it may look as if there's barely any room to build anything, but it is, with care, possible to build efficient 5x5 rooms.