How do I open a calendar door?

Simply click on the door corresponding to the current day. Future doors remain locked to keep the surprise intact.

Is it free to view and open this advent calendar?

Yes, accessing and opening the doors on public calendars is 100% free for everyone.

Yes, each theme has custom background music and sound effects that trigger when you interact with the doors.

Ignite curiosity with kitchen science! 12 days of erupting volcanoes, walking water, DIY slime, invisible ink, and static electricity magic.

FromNov 30, 2025

ToDec 12, 2025