Most Roblox games are free to play. However, you can charge people a fee to play your game (between 25 and 1,000 Robux) if you want to make money. People aren't buying your user-created game; they ...

David Brancaccio: The thing about Roblox is that you can play it, but you can also make. You can create for it. There’s an in-game currency that’s exchanged; there’s an in-game messaging system.