Board Thread:Off topic/@comment-44271304-20191029162022/@comment-44123936-20191029200204

Robux is the in-game currency of Roblox. It costs (Real Money) to get. It basically lets people buy stuff in games to make them easier or more fun to play. You can also buy certain items like hats, shirts, outfits, bundles, etc. with Robux.

As for a shorten answer: Robux is basically what you use to buy any item in the roblox catalog!

Here is a link you could also check https://roblox.fandom.com/wiki/Robux