Daily Solitaire (Arkadium)

Daily Solitaire plays by the usual Klondike rules: build down the seven tableau columns in alternating colours, turn cards from the stock, and move every card to the four foundations from ace to king. What changes is the deal. Arkadium builds each day's layout by hand so that it can always be won, and every attempt at that day's challenge starts from the same cards, so you can keep trying until you crack it.

The game opens on a Select Deck strip with one deck for each day of the month. Difficulty follows the day of the week, from one star on Monday to four on Sunday, and each deck is worth more points the harder it is, with a small bonus for playing the day's own deck. Earlier days of the month stay open, so a missed deal can be played later, and solving them all fills a monthly progress bar toward a bonus. The game saves a deal in progress, and a leaderboard sits beside it.

It runs free in the browser on Arkadium's site, on a desktop and on a phone, with no sign-up needed. Banner ads show under the game; Arkadium sells an ad-free Plus subscription. It suits solitaire players who want a deal with a known answer instead of a random shuffle that may be impossible.