About С21A — Gameplay & Story
In the exciting game C21A you will become a participant in an unusual mathematical competition. The main characters on the screen are cats, next to which the number twenty-one is indicated. Your main task in the game is to completely reset this parameter. To achieve your goal, use the special panel below, where food with different numbers is constantly generated. You need to select objects with a mouse click and give them to the characters. Each such action in C21A subtracts the face value of the product from the cat's total. As soon as you get exactly zero, the current stage of the game will end in victory, and reward points will be credited to your balance. Choose number combinations wisely to successfully complete the task.
Platform
Browser Desktop, Mobile and Tablet
Release
23 february 2026
Last Update
23 february 2026