"Spider Solitaire" is available for free through the games section on MSN.com, as of 2015. The game is available to play online and as a free download in the Microsoft Solitaire Collection.
To find the game on MSN.com, visit the site's home page and click Games next to the Entertainment heading. Click Spider Solitaire under the Card & Board heading. If the game isn't listed there, click the link to view all the games in that category, and select Spider Solitaire from the alphabetical list.
On the game page, click Play Now to open the game in a new window and play it online. Click Go to download the Microsoft Solitaire Collection.