Rebirth Cave
The Rebirth Cave is one of several Zones available in Collect All Pets. Unlike most zones, it does not feature any crystals for your pets to attack, and exists only for the pupose of rebirthing and to unlock Upgrades with Mythic Stones.
In order to gain access to the cave, the player is required to obtain all 240 pets once so they count as discovered. Pets remain discovered even if used in fusions or not equipped until the player performs a Rebirth. The Rebirth Cave is permanently unlocked after discovering all pets for the first time, and the player never loses access to it.
Rebirth
A Rebirth can be perfomed every time a player has discovered all pets, removing all pets from a player inventory and index, and gifting the player Mythic Stones equivalent to their current number of Mythical Pets. The current pet score will also be reset, but not the overall pet score, blocking the player from acessing Zones up to the Jungle except the Machines Station.
To perform the Rebirth a player must come to the altar after discovering all pets, light all the flames individually then interact with the alter itself, once complete the player receives a free common pet. On top of not affecting the overall pet score, Rebirthing also do not interact with Shiny Pets, Metalic Pets, Exotic Crystals or Upgrades in any direct way.
Perfoming Rebirths is necessary for several Badges, as well as featuring their own Leaderboard.
Upgrades
For an extensive list with all upgrades, visit Upgrades.
The Rebirth Cave features a variety of upgrades that can be purchased exclusively with Mythic Stones. They are powerful but costly upgrades that are the main reason to acquire Mythic Stones from rebirthing, pedestals are permanent and irreversible upgrades.