LINE Hello BT21

"Cute bubble-shooting puzzle game!"

- Game's title description.

, stylized as LINE HELLO BT21, or for short, is a puzzle game developed by LINE Corporation for  and.

LINE Hello BT21 features 3D characters graphic, as well as costumes, and some new characters (such as FUNKY) who doesn't appear in BT21 Universe. It was officially released in Japan, North America, Korean, Chinese, and Thai on July 1, 2019.

Blurb
Pop bubbles to weed them out!

You can pop way more bubbles if you can use a special bomb!

Get tons of BT21 characters and increase their levels!

''The town is all clean! Furbish it with a load of decorations!''

Use character skill when the time is just right!

The dandelions have come roaring into town!

Become really good friends the characters for amazing bonus gifts!

''HELLO BT21! Save the town!''

Gameplay
Each level has a different hexagon grid of bubbles of 4 to 8 different characters (KOYA, RJ, SHOOKY, MANG, CHIMMY, TATA, COOKY, and VAN) and sometimes obstacles (known as Obstacle Bubbles). The basic move of the game consists of tapping one bubble to align sets of three of the same colour, whereupon they disappear, causing bubbles above them to collapse into the space left behind, often resulting in chain reactions. The level's objectives must be met before the player runs out of moves (or a dandelion reach to the button on boss levels); in each case, the player must earn enough points to get the any coins and one star in the moves system.