Spider Solitaire, the classic two-deck solitaire, recreated in detail: Beginner, Intermediate and Advanced (one, two or four suits), ten columns dealt with face-down cards, five deals of ten from the stock that are blocked while a column is empty, same-suit runs that move together, completed suits lifted off for 100 points, 500 starting points with a point per move or undo, hints on H or by clicking the score, statistics per difficulty, numbered deals you can share by link. Original card art, MIT-licensed code, not affiliated with Microsoft. Free, no sign-in, runs entirely in the browser.

Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.