Free
Rating summary
About
Every card counts. Every column can go BOOM!
Boom 21 combines card strategy with explosive puzzle action. Place cards across four dynamite columns, aim for 21, and plan your next move before the fuse runs out.
PLAN YOUR MOVES
See your current card and the cards coming next. Choose a column carefully to make room, build your score, and keep your run alive.
MAKE 21
Complete a column with a total of 21 and watch it erupt in flames. Aces count as 1, and Jacks, Queens, and Kings count as 10.
WATCH THE FUSE
Keep an eye on active dynamite and your remaining lives. Each decision can open up a new opportunity—or put your run at risk.
LEVEL UP
Build progress, reach new levels, and restore your three lives when you advance. Challenge yourself to beat your best score.
PLAY YOUR WAY
Adjust sound effects, motion and screen shake, and haptic feedback. Choose English or Turkish, and enjoy clear menus and large, easy-to-tap controls.
Your progress saves automatically, so you can return to your game later.
Make 21. Plan the fuse.
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What's New in Boom 21
1.1
October 7, 2026
Boom 21 gets a fiery new look and a smoother play experience! • New flame effects and comic-style celebrations for big moments. • Celebration messages now appear above the board, keeping the action visible. • Refreshed Boom 21 logo. • Larger buttons and clearer settings for easier reading and tapping. • Improved game-over flow with a clear way to start again when all three lives are gone. • Interface and readability improvements.
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