Spider Solitaire is a free, Android-based card game developed by RobGlu. It is optimized for touch screens, making it easier for players to enjoy the game on their smartphones. Unlike other solitaire games, Spider Solitaire has a unique feature where instead of dragging and dropping to move cards, players only need to click on the source and destination pile, and the computer will manage the move.

One of the main features of Spider Solitaire is its touch-screen optimization, allowing players to easily navigate through the game. Additionally, players have the option to display arrows indicating possible moves, making it easier to strategize and plan ahead. Finally, the game also offers a selection of background images to personalize the gaming experience.

Overall, Spider Solitaire is a great option for those who love card games and want to enjoy them on their smartphones. Its touch-screen optimization and easy-to-use interface make it accessible to all types of players.