Roblox Uno is a Roblox platform game based on the classic card game Uno. In this game, participants must get rid of their cards by placing them on discards, following the rules that are listed on each card. The game has several different modes, including classic, fast, and tournament modes, as well as various rule variations that can be customized to your liking. Players can choose the number of opponents and difficulty level to customize the game to their preference.