Solitaire Spider is a game that belongs to the larger category of Solitaire card games. As with the other games in this category, it is designed for a single player (thus the Solitaire designation), although it can also be adapted to include other players.
 
In its traditional and most common version, it uses two standard decks of 52 cards and 2 suits. The number of suits and decks may vary depending on the difficulty of the game. Regardless, the goal is always to build 8 foundations by suit and in ascending order (from ace to king).
 
The game gets its name precisely from these 8 foundations as they resemble the 8 legs of a spider.
 
Although the first Solitaire Spider game dates back to 1947, it was only after its inclusion in the Microsoft computer software in 1998 that the game met its boom in popularity. Since then, it has become a favorite among Solitaire games, even challenging the prominent Solitaire Klondike for the top spot.

The goal of Solitaire Spider is to transfer all the cards, including those in the Stock Pile, into the Foundations. 

Unlike other Spider Solitaire games, it is not possible to move individual cards into the Foundations. The players must complete sequences by suit on the tableau first, and these will be automatically sent to the Foundations and rearranged into ascending order.

The player wins the game when there are no more cards on the tableau.