Quite simple 'get rid of your cards first' game. Every player gets a pile of cards (Cards are numbered from 1-25, each number is contained 4 times) and draws 4 cards. On your turn you can place cards on one (ore more) of the two upwards (start from 1 or the two downwards piles (start from 25). You can play only cards which are exactly one higher/lower. If you play a card that matches that criteria (even on your discard pile) you can draw another card and continue. Whoever gets rid of his cards first wins.