Atlus U.S.A. has released new screens and details on how to play Master of the Monster Lair, a Nintendo DS game scheduled for October 21st. Master of the Monster Lair is an RPG adventure where you must become the architect of a vast labyrinth, crafting levels designed to lure and capture all kinds of beasts. Every monster disposed of offers the promise of new weapons and items, allowing for more unique dungeon designs and more efficient means of killing baddies. Press 'read more' for details.