Casey Universe (book series)

Casey Universe began as a planned three book series under the same name. It was intended to reintroduce but also retire Zack Casey and move forward with Aidan Cheddar as the protagonist in future stories, creating a larger fictional universe. However, it went into indefinite hiatus following a lack of understanding of tropes and writing needed to tell the story he wanted. It would later be succeeded by the Casey Universe Stories anthology series.

Book One
One day in the city-state of Furtropolis, Zack Casey is home in the kitchen eating lunch when he stumbles upon Aidan Cheddar, a house mouse, looking to steal food from behind him. Meanwhile, Savelli Cornell is making his way across the city to the Central Tower as a security guard in an attempt to overthrow the city.

Book Two
Savelli overthrows the Central Tower, and takes control over Furtropolis. Zack and Aidan attempt to take back the city but are thrown out of the city. Meanwhile, a civil war breaks out as the two are forced to make their way back around to try and stop him. As they make their way around they meet Kit Welsh. All the while, Savelli's android, built to serve and help, begins questioning his decisions and finds a way to end the war.

Book Three
Having crashed a cruise ship into the city's port, Zack, Aidan and Kit make their way to the Central Tower. Having reached the top, Savelli's android turns on him and Zack and his team going in to stop him.