# Boom 21 - Card Puzzle — Explosive 21 Card Game

> Explosive 21 Card Game (iPhone/iPad app by Hakan Ozmen.)

- Source: https://appshunter.io/ios/app/boom-21-card-puzzle/id6785302998 (this page in markdown: same URL + `.md`)
- Developer: [Hakan Ozmen](https://appshunter.io/developer/1889604719)
- Category: Games, Card, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 44 MB
- Languages: American English, French (France), Hindi, Japanese, Korean, Chinese (Simplified, China), European Spanish, Turkish
- Released: 2026-07-09
- Data updated: 2026-09-10
- User reviews in markdown: https://appshunter.io/ios/app/boom-21-card-puzzle/id6785302998/reviews.md

## What is Boom 21?

Every column is a stick of dynamite.

Boom 21 is a calm, turn-based card puzzle with an explosive heart. Drop playing cards into
columns and stack them toward exactly 21 - hit it, and the column erupts in gold. Go over,
and it burns. Every card is a decision.

HOW IT PLAYS
Cards fall one at a time from a fairly shuffled deck. Tap a column to place each card. When a
column's total reaches the threshold, its fuse ignites and starts burning down — leave it
alone and it explodes on its own, scoring what it holds. Or take the risk: keep adding cards,
push the total toward a perfect 21, and earn double. But one card too many and the column
busts, costing you a life.

CLIMB THE LEVELS
Fill the progress bar with explosions to raise the threshold: 17+, then 18+, 19+, 20+ — each
level narrows your target and sharpens every choice. Reach the end and face the FINAL 21,
where only perfection counts and every perfect 21 restores a life. How far can you climb?

FAIR BY DESIGN
No timers. No pressure. No rigged draws. Boom 21 deals from an honest 52-card shuffled deck —
the same odds as a real deck of cards, always. See the next cards coming and plan ahead. When
you lose, it's a lesson; when you win, it's yours.

FEATURES
- Calm, turn-based play — think as long as you like
- A fair 52-card shuffled deck, never stacked against you
- Rising threshold levels and the FINAL 21 endgame
- Explosive celebrations: chains, perfect 21s, and level-up confetti
- Your run is saved automatically — pick up right where you left off
- Run history and personal records
- Plays fully offline, anywhere
- Available in 8 languages
- No ads, no account, no data collected

One rule. Endless depth. Make 21 — and boom.


## Version history (last 1 release)

### 1.0 — 2026-07-09

No release notes.

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## More apps by Hakan Ozmen

- [Kinetic Cradle: ASMR Relax](https://appshunter.io/ios/app/kinetic-cradle-asmr-relax/id6761702157)
- [Loco Master: Train Puzzle](https://appshunter.io/ios/app/loco-master-train-puzzle/id6790186163)

All apps by Hakan Ozmen: https://appshunter.io/developer/1889604719

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-10.*