AcidSpider is an updated, full-featured version of the traditional spider solitaire game. Game are ranked by difficulty level. Includes one-suit, two-suit and four-suit games. Intelligent auto-card movement and hint system. Undo and redo every move made. Card style selections have a clean, easy-to-read design and automatically adjust to your preferred screen size. Game can be maximized to full screen or played as small as a gadget using keyboard arrow keys.