The lot of pair cards is mixed up on the game area. Your task to open all cards in pairs for allocated time or attempts. It is simultaneously possible to open only two cards. If opened cards are not pair, they will close. The found pair disappears from a area.
Play modes. Time limit - open all pairs for allocated time. Time countdown begins after opening the first card.
Move limit - open all pairs for allocated moves.
You can load the pair set into the game. The set is created by the image of 27 cards placed in row. First card in row is a back. The minimal size of one card 50 on 70 pixels, maximal 200 on 300 pixels. You can find an example of a pack at a homepage. Also you can load the pair back into the game. Any picture will be scaled till the size of a card. The size of one card of a current set shows in title of dialog of loading of a pair back.