C22 System Game Rules (SRD)

From the introduction:

C22 System is a tabletop roleplaying engine using playing cards and a set of rules that give the you control over your own luck as you tell stories of fictional characters performing great deeds. This rule set will explain how to use a standard 54-card deck of playing cards to play a character in any setting you and your friends can imagine. The rule set will also show how your deck can grow and shift, becoming a unique expression of your character. Grab at least two friends and a deck of playing cards each and let’s dive in!