The Battle of Polytopia contains four 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 Rising Sun, the Luxidoor, and the Floating/Sinking city.
Gameplay-Affecting Easter Eggs Edit
Nature Bunny EditTo 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 which enables them to destroy any building and units it moves on. Just like any unit, it can attack, kill and be killed. If a Nature Bunny is in any of your cities, the city will produce 0 resources, although it cannot capture a city. Nature Bunnies cannot be spawned in Online Multiplayer.
Luxidoor Easter Egg EditUsually, when you don't own a tribe, it doesn't appear in your games. Luxidoor spawns every once a while in your game for those who do not own this tribe. This is considered an Easter Egg because they are not meant to be in games (if you don't own it). Midjiwan posted this before stating that they are merely explorers to our land.
Cosmetic Easter Eggs Edit
Rising Sun/Brighter Sky Edit
Like in the Old Hoodrick proverb, you need to hold the starry background for 20 seconds. The Sun should rise above the square. If you want the default starry background tap and hold the sky for 15 seconds. You can do this all over and over. Relaunching the app also resets the background. This Easter Egg does not affect the gameplay.
Floating/Sinking City Edit
To get the city to float, continuously tap the bottom left square.To get the city to sink, do the opposite. To reset this train a unit from there or you can proceed to the next turn. Like the Rising sun, this Easter Egg does not affect gameplay. Even thought it's either sinking and floating it still can be captured.