Solitaire Zero 21

Solitaire Zero 21 is a single player casual puzzle game. It was developed by NYX Digital Ltd and was released on August 28, 2025.

Card game fit for all the family! The aim of the game is to clear the playing area of all cards whilst keeping your deck score between 0 and 21. If you hit 0 or below, or hit 21 or above, it is game over. GameplayThe player selects one of the top cards showing an addition or subtraction sum. This adds that card to their pile, applying the maths operation to their current score. The objective of t…