Not only is Roblox a place where you can go to choose from a selection of millions of games — most of them free-to-play — you can also create and upload your own games for other players to enjoy.

How to craft 'Roblox' characters.Once you make it to the "Avatar Editor" screen, you'll be able to choose from several options that let you customize your avatar's clothing, accessories, body, and ...

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.