UpFlyDev
Off the record

We're UpFlyDev. We've been building software for twenty-something years now, for huge household names and for tiny two-person startups. Honestly? It's gotten pretty hard to surprise us.

New product? Old codebase nobody wants to touch? An AI idea you can't quite pin down? Bring it over. We'll find the smartest way to get it done, no drama, no wasted budget.

We move fast, keep things simple, and build stuff that just works.

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BOOM! app icon BOOM! Circus Knockdown

Aim the cannon,
bring the house down.

Every shot has the same strength, so it all comes down to where you aim. Hit the base, let gravity help, and knock every prop off the table before the cannonballs run out.

Play the demo

The first four stages, free in your browser

Download on the App Store Get it on Google Play

Free to start on iPhone, iPad and Android. Act 1 is free for good, and Big Top Pass opens the rest of the show.

Now on the App Store and Google Play →

BOOM! on iPhone: a cannonball hits a pyramid of colorful props on a striped circus table, with the crowd behind A tall stack of props under four balloons that carry bombs Aiming at the pyramid: the sight on the props reads Release to fire The home screen: a circus poster with a live 3D preview and the next stage on the Play button

IN THE RING

How to play.

Press and aim

Press on the arena and drag the sight to where the shot should land, or just tap there. Changed your mind? Drag down to cancel.

Release to fire

Every shot has the same strength, so the aim is everything. Hit the base and let gravity do the rest: every block tumbles, slides and bounces its own way.

Clear the table

Knock every prop off the table before the cannonballs run out. The crowd gasps, cheers and groans with every shot.

THE SHOW

Three acts, then encores.

48 handcrafted stages, and new tricks in every act: pendulums, spinners, wrecking balls, fire hoops, bomb balloons, falling curtains, blackouts and a closing press. After Act 3 the show goes on with endless encores in ten illustrated themes.

The Great Pyramid, the first stage: a cannonball breaks into a pyramid of props
ACT 1The Opening Act
Double Decker in Act 2: props fly off a two-level stack as a trapeze bar swings across
ACT 2Balancing Acts
Ultimate Encore in Act 3: a deep build of props under bomb balloons comes apart
ACT 3Grand Spectacle
An encore stage, Golden Staircase, with props raining off the table
ENCORESA new act after every act

IN THE APP

The first act is on the house.

Act 1 is free, and stays free

All 16 stages of the Opening Act, replayable as often as you like. No timers, no daily limits.

Big Top Pass opens the rest

Acts 2 and 3, the endless encores, and every new obstacle we add. Choose the yearly plan with a free week, or the monthly plan. If the pass ends, your progress stays.

No ads, no account

The game plays offline. Your progress and best score stay on your device.

The stage picker: Act 2, Balancing Acts, with five of its sixteen stages cleared

Step into the ring.

Play the demo

Play with a mouse or touch. The first four stages play free in your browser, and your progress is saved there.

No ads, no account.

Want the whole show? Get it on the App Store for iPhone and iPad, or on Google Play. Act 1 is free there, and Big Top Pass opens Acts 2 and 3 and the encores.

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