Roblox is going to let creators sell physical items from their games. It’s opening up its Commerce APIs to eligible Roblox creators, and Shopify is the first “integrated partner” for the APIs.

Roblox’s hit Grow a Garden has has spawned a black market selling in-game items for real money, violating company rules, per Bloomberg.

You can see how it works in a video from Roblox. In one experience’s “premium shop,” there’s a merch section where you can browse things like hoodies or T-shirts.