From publisher blurb:
The worlds of humans and the like are filled with quite a variety of strange environments. These are tame compared to the exotic nature of other planes of existence. Cosmologia presents an examination of many of these planes, along with mechanisms for PCs to explore them.
• The Ethereal Plane
• Tristorus - The plane of shadow
• Elphyne - The fey realm
• The 4 elemental planes
▪ Expanded tiers of elementals
▪ Genies of each element
• The Astral Plane
• Abyss - The realm of chaos
▪ New info on the 6 Types of Demons
• Celestia - The realm of law
▪ Introducing 7 Tiers of Archons
• Elysium - The realm of good
▪ Introducing 7 Tiers of Angels
• Tartarus - The realm of evil
▪ Introducing 9 Tiers of Devils
• 6 Patrons
• 44 Spells
• And a plethora of extra-planar creatures
It’s out of this world!