Chris S. said: Thank for the help. I don't know if my content is "professional" yet. I may have to look at other sites. Chris, you can make a Game in Roll20, and put your game system content, house rules, and your world there. This is free, you can make copies of the game within your account, and you can invite unlimited participants / playtesters. Add your content in the game, whether it is maps, pictures, text handouts, dice roll mechanics implemented as macro buttons, or a custom character sheet. If it is a text-based character sheet, use the Bio Tab of Characters in a free-user game. If you later decide to upgrade to a more complex form-fillable Character Sheet that can actually make calculations and chat-reports based upon numerical Attributes, then a Roll20 subscription is useful to help create, implement and use your sheet code. Use the Roll20 Looking For Group forum and the LFG listings to invite people to play and playtest it with you (like in Silvyre's post). For purposes of the LFG listings, list your game offering in the "Other Games" category since it is not an established game system title in the search engine yet. Many people are running homebrew non-D&D games and modified rules on here. This is a great site for running a homemade game system because Roll20 is built to be 'system agnostic' and not dependent on a particular ruleset. Pat's suggestion of using the Marketplace and making Modules for Roll20 is what you would undertake if you want to publish and sell the content to the general public.