Zero21 Solitaire
The game at a glance
Zero21 Solitaire reimagines the classic card game with a mathematical twist. Draw cards and add their values to a running total, trying to keep it between zero and twenty-one.
Strategic thinking is essential as you decide when to play high versus low cards. Multiple difficulty modes and daily challenges test different aspects of your number sense.
Getting started & controls
Open the game using the Play button and follow the controls shown inside the provider’s player. Touchscreen and desktop controls can differ.
The player’s “Back to guide” link returns to this page.
