Software Implementations
The most common software version of Spider is the one included in the Vista, ME and XP versions of Microsoft Windows, Spider Solitaire. Spider Solitaire was introduced in the Microsoft Plus! 98 addition pack for Windows 98.
On Unix operating systems, an early version was developed around 1989 at Sun Microsystems. A version of Spider Solitaire typically comes bundled with both the KDE and GNOME desktop environments on other Unix-like operating systems such as Linux and BSD, under the names KPatience and Aisleriot Solitaire, respectively. Versions for Macintosh and most other operating systems are also available.
The Windows version offers three levels of difficulty, with one, two, or four suits. These play modes are equivalent to disregarding suit difference, either within the colors or altogether, and thus can be simulated in the physical card game, though the computer version aids visibility by representing all cards as spades and/or hearts.
Read more about this topic: Spider (solitaire)