The Battle of Polytopia contains five confirmed Easter Eggs. The difference between an Easter Egg and a bug is that Easter Eggs were added intentionally by the developer for players to find.
These Easter eggs are the Nature Bunny, the Sunrise, the Unexpected Luxidoor, the Floating/Sinking city, and the Ridiculous Game Names.
Gameplay-Affecting Easter Eggs
To spawn a Nature Bunny, you need to tap ten times on any unoccupied square in your territory. Nature Bunnies can move around the map on every tile except Shallow Water and Ocean. Bunnies have the Crush skill, enabling them to destroy any building and units on the tile it moves onto. Just like any unit, it can attack, kill and be killed. Nature Bunnies can enter your cities, but cannot capture them.
In addition, Nature Bunnies cannot be converted with Mind Benders.Nature Bunnies cannot be spawned in Online Multiplayer.
Luxidoor Easter EggUsually, when you don't own a tribe, it will not appear in your games. However, Luxidoor can spawn every once a while in your game even for those who do not own this tribe. The exact rates are unknown. The developer Midjiwan said in reply to this that they are merely explorers to our land. This is considered an Easter Egg and not a bug for this reason.
Cosmetic Easter Eggs
Like in the Old Hoodrick proverb, you need to tap and hold the starry background for 20 seconds. The background will change to a pinkish-yellow colour, similar to the one on the menu screen. To revert the change, hold the background again for 15 seconds or relaunch the app.
Floating/Sinking CityTo get the city to float or sink, alternate tapping between the bottom left and bottom right tiles of a city.
If you start on the bottom left, the city will start to rise out of the ground, but if you start on the right, it will sink.
To reset this, train a unit from the city or hit Next Turn. Floating/Sinking cities can still be captured.