Roblox apparently has done this for some desktop users via its icons. As you’ll see in the tweet below, the game has changed the icons for the player and studio programs.

In this video, I draw custom versions of Roblox avatars submitted by viewers. Using markers, I turn in-game characters into ...

It's a fairly straightforward game, and the speeds can get very fast. There is also a shop feature where you can use robux to buy characters and other items for your own Roblox avatar.