From Expeditious Retreat Press's product blurbs:

Nevermore is an ever-changing world where reason fades into myth and imagination. Featured in Green Ronin’s True 20 Worlds of Adventure, it offers a plethora of possible and even improbable adventures for those who traverse its strange domains. Nevermore amplifies and accentuates, twists and skews, it is a place where nothing remains the same for long and all who walk its lands, fey or mortal alike, are changed forever.