Puzzle Game Bt21 is puzzle game with HD graphics so it will spoil you. This is a game icon from BTS. Game Bt21 has many of the best images. This game also has a feature where you can take pictures from your image album gallery. Puzzle Game Bt21 also includes a feature to take pictures from the camera so you can play with your own pictures. This is a very fun puzzle game. Have a nice play . This is the best puzzle game.