Extra Rare Egg

Extra Rare Egg (also called Premium Egg in Season 1) can be bought for 20 Crystals from the Get Pets page. This kind of egg will hatch an A or S grade Pet. You will also receive 66 gift points for each purchase. You may receive an upgrade of a Pet you already own, if it's not at level 8 yet, so it is recommended that you upgrade all your pets to Level 8 in order not to waste any precious Crystals. This is the only pet egg that does not contain coins, so if you have all Pets at max level, you will not be able to hatch any more eggs (the Hatch button will be disabled). Alternatively, players are able to obtain a free Extra Rare Egg from the Invite Event.

Trivia

 * In season 1, this egg has ever been called Premium Egg.
 * To date, only Gold Drop, King Choco Drop, Luck-o'-Lantern, Brown Balloon, and Cony Balloon are unobtainable through Extra Rare Egg. King Choco Drop can be obtained through Mystery Jewels, while the others are event exclusive.
 * Players can receive one Extra Rare Egg by inviting 10 friends who have not played cookie run before through the Invite Event.