5 Worlds Book 5: The Emerald Gate by Alexis Siegel 5 Worlds Book 4: The Amber Anthem by Alexis Siegel 5 Worlds Book 3: The Red Maze by Alexis Siegel 5 Worlds Book 2: The Cobalt Prince by Alexis Siegel 5 Worlds Book 1: The Sand Warrior by Alexis Siegel