Play Your Cards Right To Survive Playing Cards – Full Size Bob designed and produced the mini cards that are available only in the survival kit and now the full size cards are available for purchase separately. The purpose of the cards was not only to beat boredom but also to help put a person into a rational state of mind when in a survival situation. These cards will help ground you when under the stress of being lost or stranded. Each card has a handy survival tip to remind you of the necessities and priorities for survival.