ARMS is a fighting sports game that uses extendable arms for battle. Similar to boxing in that the player strikes their opponents with their fists, however targeting is used in a manner akin to shooter games. ARMS can be played on split-screens, online or with Switch vs Switch.
The game is a 3D arena fighter. Each player holds a Joy-Con in each hand. Tilting in a direction moves the character in that direction. L is a dash, and R is a jump. The punching is done through thrusting forward a Joy-Con and thrusting both forward performs a grab. Pressing ZL or ZR allowing the fighter to start a Flurry Attack by repeatedly punching the opponent.