what exactly is roblux?

I have seeing so much about this roblux what is it exacly?

Robux is the online currency used in the popular online 3d platform gane Roblox. It is a very desirable currency due to its price and many people like to earn it free.

I dunno dud I am wondering

im tryna find out the samething too

Robux is an in-game currency for Roblox which allows you to purchase clothes for your avatar, create groups and if you become a full-time creator then a source of income because it can be traded for real-life money. At least from my perspective :)

it's super useful if you play the game