Lord Zack's Planescape
Acheron is an eternal battlefield of endless conflict. It is a plane of law where conformity takes precedence over any thoughts of good. Unending battles take place across the entire plane between huge armies, with no chance of victory or cease-fire. Each layer of plane consists of a huge numbers of iron cubes of varying size, from continent-sized to small islands. Not all of these are actually cube-shaped, but they are generally called cubes nonetheless. The cubes float in an air-filled, infinite space, occasionally colliding with each other.