The 22nd Floor (第22層, Dai 22-sō?) of Aincrad is one of the most sparsely populated areas in Aincrad. Although it is one of the lower floors, with around 9 kilometers in diameter, most of the floor's surface is occupied by lakes and forests. Monsters only seldom appear within this floor and even the Labyrinth on this floor had a very mild difficulty. The floor is also known for not having any Field Bosses, unlike most of the other floors.