The 2021 Advent Calendar is a daily advent calendar in CP3D, accessible during the Holiday Party 2021. Players could collect items daily, from December 18 to December 25.
Due to a bug, the items became unavailable starting January 1, 2022. However, because the interface was still available, the items could still be obtained by modifying your system clock to before January 1, 2022. This method worked until around March 4, 2022.
Items[]
| Image | Item | Type | Release date |
|---|---|---|---|
 |
Gingerbread House Pin* | Pin | December 15 |
 |
Springy Santa Hat* | Head Item | December 16 |
 |
Holiday Puffle Story* | Body Item | December 17 |
 |
Aurora Background | Background | December 18 |
 |
Hot Cocoa | Hand Item | December 19 |
 |
Light-Up Scarf | Neck Item | December 20 |
 |
Milk and Cookies | Hand Item | December 21 |
 |
Tinsel Lei | Neck Item | December 22 |
 |
Holiday Tree Sunglasses | Face Item | December 23 |
 |
Blue Penguin Stuffie Costume | Body Item | December 24 |
 |
Santa's Sleigh | Miscellaneous Item | December 25 |
*Did not become available until December 18, when the party started.