The smartphone can be set to vibrate when a Pokémon is nearby. Players can also find "PokéStops" and Pokémon Gyms at "interesting places, such as public art installations, historical markers, and monuments." At PokéStops players can acquire Poké Balls and other items. After the player explores enough, these PokéStops will offer Pokémon Eggs that will hatch after the player walks a certain number of steps.Pokémon Gyms will be empty until players assign Pokémon to them. Each player can only assign one Pokémon to the Gym, and so must work with a team to defend the Gym. At a certain point in the game, players will be asked to join one of three teams.
Players can gain levels as a trainer to catch more powerful Pokémon and receive better items. Catching enough of one kind of Pokémon will allow the player to evolve that Pokémon. The game will also offer achievement medals.
Nintendo also hopes to let players pay attention to their surroundings instead of just looking at their screens by offering the "Pokémon Go Plus" wristband device. The device can also be used as a clip to be clipped onto suit jackets, etc. The "Pokémon Go Plus" device will have LED and vibration functions that will alert players to something happening in the game. The device uses Bluetooth technology to connect to players' smartphones. Players can still play the game without the device.
Pokémon GO will be available in 2016 for Android phones and iPhones. Field testing began in Japan in March
Update: The beta test registration is available in the United States, not all of North America. It is also available in Australia and New Zealand. Thanks, CrowLia and Amara Tenoh