The Kane Chronicles

website

wikipedia

ARBookfinder.

rating: 4/5

summary: Egyptian gods exist. (really, that is all you need to define this series)
wiki
ARBookfind
rating:3.5/5

summary: the king of the gods must be saved!
1 more book exists and will be posted soon.

The Heroes of Olympus

wikipedia
Website
Summery: Many heroes work to save Olympus.

Series rating:3.5/5

The Lost Hero
Rating:3.25/5

The Son of Neptune

Rating:4/5

more books in this series have not been read. they will be posted ASAP. 

The 39 Clues

Wikipedia
website
ARbookfinder (first book)
Series Rating 3.75 / 5

Summary:

The maze of bones
Rating 3.75 / 5

One false note
Rating 3.5 / 5

The sword thief
Rating 3.75 / 5

Beyond the grave
Rating 4 / 5

The Black Circle
Rating 4 / 5

In too deep
Rating 3.5 / 5

The viper's nest
Rating 3.5 / 5

The Emperor's code
Rating 3.5 / 5

Storm Warning
Rating 3.25 / 5

Into the Gauntlet
Rating 4.5 / 5

Vespers rising
Rating 3.75 / 5
This book is a bridge between this series and the Vespers vs. Cahills series

Percy Jackson & the Olympians

website
Wikipedia 
AR page
series rating:4.25/5 stars
Summary: Percy Jackson fights and protects the gods.  He fights gods such as Ares and protects gods such as his father Poseidon.
the Lightning Thief
(4/5)

the Sea of Monsters
(4/5)

the Titan's Curse
(4/5)

the Battle of the Labyrinth
(4/5)

the Last Olympian  
(4.25/5)