Small monsters appear on the map during holiday Events. By tapping on them, you can receive a reward - coins, energy, and maybe even an item for entering the event location.
These monsters appear over time and hide in both parts of the City.
On Halloween, there are hats, zombie girls, ghosts, and wandering cauldrons.
On Thanksgiving, foliagers.
On Christmas, snowmen.
On Easter, bunnies.
During some Upper City Events,
you might see living statues and playful goats, as well as popcorn thieves and mimes.