Binding of Isaac: Rebirth - How to get Angel & Devil rooms

Let's have a thorough look at how exactly Devil & Angel rooms are spawned, and how you can make sure you get them.

Link to info on Devil Room:
http://bindingofisaacrebirth.gamepedia.com/Devil_Room

Link to info on Angel Room:
http://bindingofisaacrebirth.gamepedia.com/Angel_Room

Intro song:
"Cupid's Revenge" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Видео Binding of Isaac: Rebirth - How to get Angel & Devil rooms канала Waervyn's World