In my book I've made up a card game where I've already thought the rules. Now I want some of the characters playing this game. Mi questions are:

1. Should the reader know the rules?
2. If I want to explain these rules, where is better to do so, within the story or in some kind of Appendix at the end of the book?

In my book I've made up a card game where I've already thought out the rules. Now I want some of the characters playing this game.

My questions are:

1. Should the reader know the rules?
2. If I want to explain these rules, where is better to do so, within the story or in some kind of Appendix at the end of the book?