Act fast, though, because this lightning Cyber Monday deal on Roblox gift cards is selling out fast.

At the heart of the Roblox experience lies RBX: RBX: Robux, the virtual currency that enables players to enhance their avatar's appearance, purchase items, and unlock exclusive in-game features.

Some Robux casinos have shut down. The unlicensed casinos, which were investigated by Sky News, let people gamble Robux, Roblox’s virtual currency, though they weren’t actually on Roblox.