Which mobile game caused a second Pokémon craze in 2016?

Pokémon Go caused a second Pokémon craze in 2016.

Developed by Niantic, Pokémon Go is an augmented-reality mobile game that uses location data, maps, and smartphone cameras to place Pokémon in the player's real-world surroundings. Players explore outdoors to find, catch, and train Pokémon.

The game launched in July 2016 for iOS and Android and quickly became a worldwide cultural phenomenon. Its use of familiar Pokémon with location-based play introduced the franchise to many people who had not played the main handheld games.

Pokémon Go is distinct from the core role-playing games developed by Game Freak. It does not replace the main series; instead, it is a mobile spin-off with its own capture, battle, raid, and trading systems.