Encylopedia Mythologica covers Ancient Egyptian gods as well as the more famous Greek and Roman gods. The book also covers Norse, Middle Eastern and Native American gods. Like the other books in the series, the pop ups are magnificent and there are pop up pages-within-pages chock full of interesting stories and factoids.
What I love about this book series (and I think I own them all) is that it entertains at many levels — younger kids will love the pop ups and may only want to read selectively, and older kids can absorb a lot of information by exploring all the smaller pop up pages. This is a great non fiction book for reluctant readers and Middle School kids since 6th grade typically covers Greek Mythology.