In just one week, this puzzle-packed advent calendar will be back for a 5th year!

The Confounding Calendar returns this December: a new tiny puzzle game surprise each day of the month, taking submissions now · Thinky Games
The most puzzle-packed Calendar around is back for a 5th year running: The Confounding Calendar is a big community event that takes place every November-December and involves everyone getting together to make bite-sized, single-level puzzle treats that are then slowly released over the course of a month.