Roblox is one of the most customizable games ever made. Besides allowing you to make whatever game you can think of, it also allows players to create image IDs to share pictures.

Games on Roblox have their own currency, skins, weapons, vehicles, accessories, and much more. All these items can be bought in-game as well as through redeem codes.

Once you've spawned into the square game, get to the location where the avatars are seen dancing (refer to the image). Here, you'll find the option to purchase the "What is Love" emote.