In addition to being a portable hybrid console, one of the Switch's most impressive features are its Joy-Con controllers. The Joy-Cons on the side of the Switch can be used as a pair, for a traditional gamepad experience, or on their lonesome as individual controllers. That means that you have two controllers, right out of the box — though they're a little small for most adult hands.
The Switch will also let other controllers, including more J0y-Cons or the official Nintendo Switch Pro Controller, connect via bluetooth or USB.
If you have trouble connecting your controllers, or want to separate your Joy-Cons, navigate to the Change Grip menu to see exactly which controller is assigned to which player. To get there, hit the Home button on the controller, and navigate below your library of games.
On the main menu, the Switch will also show you which controller is being used, and which way you should be holding your Joy Con, with an icon in the lower left-hand corner.
Some controllers and accessories that were originally designed for Nintendo's Wii U actually work with the Switch, like the "Pokken Tournament" controller and the GameCube controller adapter, which can be used to connect up to four controllers for "Super Smash Bros. Ultimate."