Roblox has pioneered a unique digital currency system with Robux, which serves as the primary virtual currency across its vast platform of user-generated games and experiences. This currency system has become integral to Roblox's creator economy, enabling developers to monetize their games while providing players with customization options and special features. Roblox's success with Robux demonstrates how digital currencies can foster a thriving ecosystem where both creators and users benefit from virtual economic transactions.