I haven't gotten around to implementing the Spider variant yet.
If you have Windows, you should have a copy of Spider Solitaire on your system, like in the picture on the right. Or, you could play on World of Solitaire (hit Solitaire → Select Game in the menu bar) – I personally think their graphics are better than the Windows version.
Spider solitaire was popularized by the Spider Solitaire application in Windows.
Since then, it has become one of the most popular solitaire variants on the Internet. It even has its own Wikipedia page.
The rules are simple: Build down the tableau with cards going from high to low. You can also move packs of cards, as long as they are sorted by rank and have the same suit. At any time, you may deal cards from the stock (on the lower right) onto the tableau, adding one card to each tableau pile. When you build a sequence from King all the way down to Ace on one tableau pile, it is immediately removed. The goal of the game is to remove all cards in this way.
There are several variants. The easiest (as in the screenshot) is One-Suit Spider. Spider can also be played with two or more suits, in which case strategy becomes important, and the game gets really difficult.
Hi, I am Jo, and I started Solitr in November 2011.
The source is available on GitHub, licensed under the MIT license.
For now, Solitr only supports Klondike Solitaire, but I am hoping to add more variants soon.
I am thinking that the next variant to add might be Spider Solitaire, but if you have a particular wish, do let me know!