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Robux (singular Robuk, plural Robux) or Robuck, stylized as R$, is the sole currency on Roblox, aside from in-game currencies. Introduced on May 14, 2007 as a replacement of the ROBLOX points, Robux is known as Roblox's primary currency by the community and staff; all Roblox-created non-free items within the catalog are sold in Robux. The name Robux is a portmanteau of Roblox and "bucks" (bux).
ROBUX is used in Snow Shoveling Simulator and Snow Ball Fighting Simulator to buy game passes and cash/gold in their respective games. Some badges require items bought with ROBUX, such as the Blizzard Bomb's badge.