Monster eggs are items dropped from monsters. When a non-boss monster is killed, there is a slim chance it will drop a monster egg of its respective monster type. For example, killing a Blue Beetle may yield a Blue Beetle monster egg. The player cannot do anything with eggs themselves, however, they can be given to the Sigil that runs the stable. When in there, a timer will begin to count down. When it reaches zero, the egg will hatch, revealing the monster within. The initial time on the timer depends on the monster it will hatch into. Eggs can be many different colors, depending on the monster inside of it. Most of the weaker monsters have grey eggs, although some are green, some are red, and some are even purple.
Eggs are found under the Items tab.
A free Skull Pixie egg is given to the player with premium edition. It is found under the Premium tab.