Ring-Con is the Nintendo Switch accessory used for Ring Fit Adventure.
Ring Fit Adventure launched in October 2019 with two specialized accessories: the Ring-Con and a Leg Strap. The player places one Joy-Con controller in the Ring-Con and another in the Leg Strap. The game then interprets movements such as pressing, pulling, running, and squatting as actions in an adventure game.
The Ring-Con is a flexible circular controller accessory with built-in resistance. It is not a game console or an independent controller, and it does not contain the game itself. The bundled software combines exercise routines with role-playing elements, allowing players to defeat enemies and travel through areas by performing real movements.
The accessory is different from Nintendo’s earlier Wii Balance Board, which measured weight distribution and was associated with Wii Fit. It is also different from Poké Ball Plus, a small controller made primarily for Pokémon: Let’s Go, Pikachu! and Pokémon: Let’s Go, Eevee! Ring Fit Adventure was designed specifically around the Ring-Con and Leg Strap combination.