Invite vetted projects and their community into our game to have their AMA in our game. They will promote that they will be having a AMA on our game. Then they log in and see how the game works and how easy it is to start playing maybe even kill a few enemies on their way to the AMA. They get hooked. Also allow some projects to rent the stage possibly for a small Bezoge burn, depending on how long they want the stage for and desirability of the time slot. Maybe even sell them in-game hats/merch with their project logo.