From the publisher's website:

Get in the competitive spirit with the Skip-Bo card game where players skilfully build their own stacks of sequentially numbered, ascending cards. To begin the game, players are dealt the same amount of cards face down into what becomes their personal STOCK pile. During play, they draw from a central DRAW pile and work towards starting up to four BUILDING piles. Each pile is then built up numerically in sequence, 1 through 12. The first player to deplete their pile wins! A Skip-Bo card is “wild” and can be played to start a BUILDING pile or as any other number, too. These cards are perfect for breaking up static situations or helping to beat your opponents. This game presents numerous opportunities to strategize: the organizing of cards into the discard piles, avoid setting up the next players for good plays, knowing when to play from which option and especially the timing of playing a valuable “Skip-Bo” wild card.