Play Instructions:

GoGo21 is a card game based partly on the Black Jack rules and way of counting, and the game objective is to place a deck of cards in such a way as to create as many 21s as possible. You can place each card in any column as long as the sum does not exceed 21. The current sum of the column is presented above each column. If you cannot place the card in a column you have to throw it away by pressing the Discard button. Keep the number of cards you throw away to a minimum, as this will affect your completion bonus.

Control Scheme:

Fire: left_mouse.
Movement: mouse.
Jump: na.