[header] How to write rules for your own rpg [title] Choose the kind of rpg you'll be making. [step] There are many different varieties of rpg you might decide to create. Common versions include tabletop, live action role-playing (larp), and pen-and-paper. 
You'll need to decide which of these you plan on making before you go any farther on your rpg making journey. [substeps] Tabletop rpgs often involve a game leader, frequently called a dungeon master or dm, who draws maps that are used on a tabletop along with descriptions to create the setting for the game.