Online Bumper Cards is an easy yet engrossingly fun combination of Solitaire and the classic card game 21. The object of our online Bumper Cards - add cards in each of the four slots until they total 21. Sounds pretty simple right? Keep in mind when you play free Bumper Cards game online that while you're stacking cards, you have to pay attention to the value before you add new cards, otherwise you may go over 21 and 'bust.' Playing cards has never been this much fun. Why not stay and try your hand at online Bumper Cards today?