Spider solitaire is one of best-known two-deck solitaires, despite the fact that it's an extremely difficult game to win. It seems to inspire a fanatic devotion among some players. Perhaps the rareness of a win makes it all the more satisfying when, once in a while, it does come out.
You can try Spider solitaire right now, please download a free demo version (limited to the timed game only).

Minimum requirements:
- Windows Mobile for Smartphones version 5.0 or greater
- QVGA (320x240) screen resolution
- 350K free memory
Main features:
- Supports both QVGA portrait and landscape orientation
- Three game difficulties (1, 2 and 4 suits)
- Current game state saved for each game type
- Two keyboard navigation types
- Unlimited undo
- Show Next Move feature
- Supports timed game
- Adjustable card back
- Best times table
- Statistics
- Game rules