Have you tried Final Fantasy Brave Exvius, the Square Enix mobile game, if not you may want to. Starting in mid January, Ariana Grande will be a playable character in the game with a remix of her song Touch It in the game also.
More details around the collaboration and limited-time in-game event will be revealed in the middle of January.
This comes on the heels of Final Fantasy Brave Exvius surpassing nine million downloads outside of Japan. To celebrate the milestone, players will receive a significant boost in daily log-in bonuses.