Roblox is an online gaming platform and a tool for game development created by the Roblox Corporation. It enables users to create games and play those that are made by others.

How Roblox is Using AI to Create Its Own Holodeck Roblox’ Chief Science Officer on how AI will make creating games as easy as describing what you want.

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.