The Universe's First Block Action Puzzle Game, PUZZLE STAR BT21
Meet BT21 and experience this unique game on the mobile platform now!

◆ The Friends Creator's First BT21 Game Title
The universe-class cute BT21 characters meet an innovative puzzle game!
The Incredibly Creative Block Action Puzzle Game, PUZZLE STAR BT21

◆ BT21 has set off on a journey to become UNIVERSTARS.
TATA came to Earth with the AI robot VAN to become a UNIVERSTAR.
However, things haven't been easy for him...
Gather like-minded members, perform missions, and find the legendary song!

[BT21's Missions]
- Collect blocks.
- Collect Melody blocks.
- Remove Iron blocks.
- Light bulbs.

◆ It's not hard at all. In fact, the more you play, the tougher it'll be to stop!
Draw blocks in empty spaces and complete missions.
Clear 1 or more lines to get helpful items.
Clear lines with a variety of boosters and items, and become a UNIVERSTAR!
Draw and clear blocks! Pretty easy, isn't it?

◆ We'll stand out from the others! BT21's unique style )
The BT21 members' trendsetting fashion styles
are only available in PUZZLE STAR BT21!
Join the game and enjoy the BT21 members' unique styles.

[Secrets of BT21 Character Costumes]
- They don't just look cute.
- They also provide various abilities to help you complete missions.

◆ PUZZLE STAR BT21 is more fun when you play it with your friends!
Share your BT21 news on Facebook and make friends with other users.
Friends can exchange Hearts for the game.

What's New

Version 1.0.5

Added New Episode 11
Added New Event
Improved the stability of PUZZLE STAR BT21
Fixed minor bugs

Ratings and Reviews

4.9 out of 5

7.3K Ratings

7.3K Ratings

BT21 strikes again with a cute game!


I’ve been a fan of the BT21 characters ever since I found their LINE stickers and iMessage stickers! This game is super cute with its collectible characters with different themed costumes. Also, the gameplay is rather unique. With an interface similar to that of Candy Crush and Tetris, it actually offers an original player experience. We get to draw the blocks and decide where we want to draw them! The various sound effects are also a great edition, and I love how we are able to pick and choose which character we want to play with. In addition, the storyline is quite entertaining and easy to pass if you aren’t interested in the story and just want gameplay.

Pleasantly Surprised


Ima keep it real here chief, I only got this game because it’s bt21 and I’m a big ol’ sucker for anything bts, but I was happy to find this game is pretty engaging and doesn’t have the irritating feature of recharging/waiting that many other puzzle games have. You can chug along a whole slew of levels and never have to wait an arbitrary amount of seconds/minutes/hours between each level, and there no wait punishment for losing a level either. Most microtransactions seem to used in the gatcha for cute costumes and upgraded characters and perks, both are not necessary to play the game which is 👌 fine by me. Also I got Koya right away which made me immediately like this more 😔✊

Very nice puzzle


As much as I love BTS and BT21, I don’t like review things with an obvious bias opinion.

It’s an overall nice puzzle, where some levels makes you think. I do like how the characters constantly level and there is no duplicates like SuperStar BTS. I really love how everything is laid out as well and each level is unique in their own way.

The only con thing is that there is only two options to save data. Facebook or guest. Not everyone has a Facebook (and there’s a bug when trying to login to that but I’m sure it’ll be fixed in the next patch), so I wish they have in mind that there are other types of logins (ie: google, instagram, line, etc). I hope in future updates, they introduce a new set of options for that.


LINE Friends Corporation
221.4 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
Copyright © LINE Friends All Rights Reserved
In-App Purchases
  1. Tiny Ruby Package $1.99
  2. Once-in-a-lifetime Package $0.99
  3. Small Ruby Package $4.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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