Classic
Build your run
Climb through 17+, 18+, 19+ and 20+ thresholds. At mastery, fuses remain active at 20+ and your score multiplier reaches ×5. Exact 21s can restore a life, up to three.
Boom 21 · iPhone & iPad
Four dynamite columns. Three cards to plan ahead. Place each card, build toward 21, and turn a burning fuse into an explosive score.
Take your time: fuses count moves, not seconds. Your next clever decision is worth waiting for.
Offline play · No account · English & Turkish

Tap a column to place the current card. Aces count as 1; J, Q and K count as 10. Each column holds up to five cards, and the next three cards stay visible in the upper-right corner.
Clear the column instantly with a fiery jackpot. An exact 21 doubles that column’s base points before the level multiplier is applied.
Reach the level’s threshold to light a four-move fuse. Playing another column burns it down; adding to the lit column resets it if the total stays below 21. At zero, it cashes out automatically.
Go over 21, or fill all five slots below the threshold, and you lose a life. Leveling up restores three lives. When a run ends, the results screen lets you start again.
Three ways to play
Classic
Climb through 17+, 18+, 19+ and 20+ thresholds. At mastery, fuses remain active at 20+ and your score multiplier reaches ×5. Exact 21s can restore a life, up to three.
FINAL 21
A separate mode with no fuses or automatic cash-outs. Only an exact 21 clears a column for points. Start with three lives; each exact 21 restores one, up to three.
Daily Deal
A fixed deck for each UTC date, using the Classic progression rules. Play up to 100 moves and retry that day’s deck to improve your score. No internet connection required.
Clear two or more columns for points in the same move to earn a Double Boom bonus of 25% on that move’s base gain.
Real screens from the current game. Full-column fire, glowing fuses and comic-style celebrations bring each move to life. Messages sit above the board so the explosion stays in view.






Large settings rows and clear labels. Adjust sound effects, motion and screen shake, and vibration independently. Turn motion off to remove shake and particle effects.
Switch languages in Game menu → Sound, motion & language. The game’s interface and instructions update with your choice.
Your current run, settings and records save on your device. Return to your board later without an account or cloud sign-in.
Review your last 50 runs and your best scores by mode in History & records. Each attempt gives you a new score to chase.
All three modes work without an internet connection. No ads, no account and no in-app purchases in the current game.
When your last life is gone, the results screen shows how you did and offers another game. The opening tutorial teaches the basics in three moves.