What would you call it when a child does work that you profit from?

Doesn’t matter what you call it. It’s profitable and you know that’s what’s meant.

Is labor. There is a whole market of Roblox related things, there are job sites, freelance sites that employ kids to work on design/programming/marketing of these game modes. To pay them the game currency that maybe later can be traded for real money.

Is not just kids tinkering with the game.