Easter eggs are intentional hidden features. Easter eggs have been added over time in different updates.
Nature Bunny Unit
The Nature Bunny unit is an Easter egg that can be spawned in single-player by tapping an unoccupied tile in player-controlled territory ten times. The Nature Bunny has the crush skill, enabling it to destroy any building on tiles it moves onto.
Luxidoor Easter Egg
The Luxidoor Easter egg gives mobile players that do not own Luxidoor a 10% chance of meeting the tribe as an opponent in single-player games. This is officially an “apology” for Luxidoor being more expensive than other tribes.
In the Steam version, this Easter egg is extended to all unowned tribes.
Mixed Tribes Easter Egg
The Mixed Tribes Easter egg allows players to combine two tribes with three stars each. This is done in the tribe selection screen: on mobile, tap and hold the icons for both tribes; on Steam, hold down the alt key, click one tribe's icon, then hold the other tribe's icon (while still holding the alt key). High scores for mixed tribes are saved in the Throne Room.
Mixed tribes have the gameplay of the second tribe selected but some of the aesthetics of the first tribe selected. More specifically, the first tribe selected determines the first four characters of the name, the city style, and the unit style of the mixed tribe, while the second tribe selected determines the last three characters of the name, the terrain style, and the technology (including starting and special technology, where applicable) of the mixed tribe.
Floating and Sinking City
The floating and sinking city Easter eggs allow players to float or sink a city by tapping the tiles on the bottom-left and the bottom-right of a city alternatively. Tapping on the bottom-left first causes the city to rise into the sky; tapping on the bottom-right first causes the city to sink into the ground. This change is purely cosmetic and does not prevent the city from being attacked or sieged. The change can be reverted by training a unit from the city or ending the turn.
The sunrise Easter egg allows players to change the sky to a pinkish-yellow "sunrise" color. This is done by holding the starry night sky background for 15 seconds, then releasing. This change can be reverted by holding the background for 15 seconds again or relaunching the game.
The ∑∫ỹriȱŋ language is an Easter egg available to players that own the ∑∫ỹriȱŋ tribe. For those players, the ∑∫ỹriȱŋ language can be found in the settings menu. The language was developed by Zoythrus, the official community manager.