ペンギンの消えた足跡 (Pengin No Kieta Ashiato)

The 21 penguins are now 20. Which one is the missing one?

If you organize the information about the children who are present, you may be able to find out the children who have disappeared.

Play cards according as a trick-taking game and guess the number of the child who disappeared from the numbers that gradually appear, and guess the number!

ペンギンの消えた足跡 is a trick-taking deduction game with only 21 cards.