With our free online Bumper Cards, the game deals from a deck of cards one at a time. It's fairly straightforward in that a card can be placed on one of four stacks or thrown away by clicking on the discard pile (subtract 5 points). The value of each stack is added. Numbers are worth their written value, so face cards are worth ten, and aces can be either 1 or 11. 

Points awarded for each stack are as follows:
If you get 21 with 3 cards: 120
If you get 21 with 4 cards: 140
If you get 21 with 5 cards: 160
If you get 21 with 2 cards: 180
If your stack has 5 cards but is worth less than 21: 200 
If your stack of cards is worth 21 with a black jack and an ace: 250
If your stack is worth 21 with three 7s: 300
If your stack is worth more than 21: -50 (Bust) 

Here are how multipliers work: The points for any stack are multiplied if you close, or score 21, in a row. 

Keyboard commands:
For our free, online Bumper Cards, the left and right arrows will help you move from stack to stack, the down arrow drops your card on a stack, and then the up arrow discards it.