If you're planning on using rev-sharing to create a game or want to join in on one that's already doing so, check out Crowdsourcer.io. The platform formalises the rev-share model by logging the contribution of each member in a project and then when your game is up for sale, distributes the profit to everyone based on how much they've contributed.
By working this way you can better avoid conflicts, monitor and review the quality of contributions, formalise your payment structure and have access to tools to help build your game all in one place. Like this, you can build your game quicker, with less compromise on scope, whilst getting all the help you need without any financial investment whatsoever.
Additionally, Crowdsourcer.io provides selling tools and a marketplace to help make your game available in more places. You can direct your customers to a secure platform to buy your products without competing with the big players or sacrificing an astronomical cut of the sales.
You can contact the creator of the platform here on GameDev.net and on Discord: Mackey18#7862. He's actively helping market and advise projects on the site.