Draw cards and drop on main card and keep it balanced between 0 and 21 or you will lose! Continue to play various levels that requires focus and is lots of fun! Hyper Solitaire - Zero 21 - Card Game is a difficult sport with a easy rule. Zero 21 is a enjoyable numbers sport with solitaire taste to loosen up and unwind whilst retaining your idea sharp Try to stay between 0 and 21. It's not easy! Zero21 Solitaire is a fun number game with solitaire features to relax and have fun while keeping y