Swing, drop and stack with real physics

A tall yellow tower crane swings the next piece over your building site. Move the trolley, time the swing and let go: steel boxes, girders, glass panels and water tanks land, tilt, slide and settle under real physics, and anything that slips off drops into a soft cushion of sand.

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Genre: Physics stacking
Controls: Touch
Mouse
Keyboard
Devices: Desktop
Tablet
Mobile
Released: 2026

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Tower Crane

Tower Crane is a construction-site stacking game drawn as a bright cartoon side view, with a tall yellow crane, a city skyline that sinks away as your tower climbs, drifting clouds and the odd flock of birds. The next piece hangs from the hook on a swinging cable: a steel box, a long girder, an L-shaped module, a slippery glass panel, a heavy water tank or a roof. Move the trolley along the jib, watch the swing and drop it with a tap. Every piece is a real rigid body with its own weight and grip, so it lands, tilts, slides and settles, and a piece that slips off the edge falls onto a cushion of sand with a soft thump.

Forty brain-teasing challenges ask for a height with a given set of pieces and a limited number of drops. Some sit on two pillars with a gap to bridge, some want the tower to stand dead straight, some must be finished with a roof on top, and from level 8 the wind pushes the hanging piece and drifts it as it falls. Three stars go to reaching the height, losing no piece and staying within the drop budget. Undo takes the last drop back exactly as it was, though the drop still counts. Every challenge has been proven with a reference solution under the game's own physics, which is also what the demo plays.

Free build is the place to relax: endless pieces, no budget and no goal, just a quick question of how high you dare to go. Pick any piece from the bar, undo and redo fifty steps, erase a piece and watch the tower settle again, keep up to twenty towers in your browser and press Photo to save a picture. Your tallest stable tower is kept as a high score.

Tips for Tower Crane

Tower Crane is a game of timing the swing. The piece keeps moving on its cable after you stop the trolley, so let it settle or wait until it swings back over your target before you drop. Each piece has its own weight and grip: glass panels slide, water tanks are heavy, and long girders are handy for spanning the gap between two pillars.

In the challenges your drops are limited, so think about which piece goes where before you let go. A wide, flat base gives later pieces somewhere safe to land, and a roof should be saved for last when a challenge asks for one. From level 8 the wind pushes the piece while it hangs and as it falls, so aim a little upwind. Undo restores the last drop exactly, but the drop still counts against your budget. If you just want to see how high you can go, Free build has no limits and keeps your tallest stable tower as a high score.

Frequently asked questions

Is Tower Crane free to play?

Yes. Tower Crane is free to play in your browser on Kiloo, with nothing to download and no account needed. Up to twenty Free build towers can be kept in the browser you play in, and your tallest stable tower counts as your high score.

Can I play Tower Crane on my phone?

Yes. On a phone or tablet you drag sideways to move the trolley and tap to drop the piece. On a computer the arrow keys move the trolley, Space or a click drops, Z undoes and Y redoes.

How do I get three stars in Tower Crane?

Each challenge gives three stars: reach the target height, lose no piece off the edge, and stay within the drop budget. Undo can rescue a bad drop, but it still uses one of your drops.

What can I do in Free build?

Free build has endless pieces, no budget and no goal. You pick any piece from the bar, undo and redo fifty steps, use the eraser, save up to twenty towers and press Photo to keep a picture.