Much like most things on Roblox, you will be making this yourself from scratch, so you'll need to design a t-shirt in an image and then upload it to Roblox.

Development is outside of the scope of this article, so for that you should visit Roblox 101: How To Make Your First Game, which details what you need to know and where to find that information.

With Roblox available on many formats, here's everything you need to know about the game, including tips on how to play safely online.