Solitaire daily challenge is a solitaire game that generates unique daily challenges every day at differing degrees of difficulty. It is free to play, and every game is winnable if the right strategy is used. It can be played on a computer, phone, or tablet. If there are no time limits on a challenge, a person can stop playing and come back to their game when they choose to. Solitaire daily challenge is a single player game with no limits on the number of days it can be played.