Christmas Key Chests were available inside the North Pole Castle during the 2021 Christmas Event for 1, 5, 25, and 250 Christmas Keys.
| Chest | Rarity | Pet | Board |
|---|---|---|---|
| 1 Key | Common | Santa Dog Chonks | Surprise |
| Jackalope | |||
| Uncommon | Ornaments | Snowplow | |
| Snowcub | |||
| Rare | Mr. Jangles | Ice Bow | |
| 5 Keys | Cozy Purple | Stargazer Bloom | |
| Triple Snow | |||
| Legendary | Krampus | Noobcicle | |
| 25 Keys | Spunky | Hot Choco | |
| Jolly Knight | |||
| Godly | Cuddle Buddies | I'm A Gift | |
| 250 Keys | Mythical | Soul Runner | Dream Runner |
Part 2 of the event added three more Christmas Key Chests for 50, 350, and 350 Christmas Keys.
| Chest | Rarity | Pet | Board |
|---|---|---|---|
| 50 Key | Legendary | Christmas Cheer | Peppermint Rover |
| Penguin Chick | |||
| Godly | Eggbelle | Gift Bearer | |
| 350 Keys | Mythical | Cupid | Dancer |
| Donner | Prancer | ||
| Blitzen | Vixen | ||
| Fred | Comet |