Tower City: Storm Builder

Build a skyscraper floor by floor with a tower crane. Tap to lower each floor: line it up for a perfect, welded joint. A sloppy stack is weaker and leans.

Then the forecast comes true.

KEEP IT STANDING
• Hurricanes push and gust. When the eye passes, the wind comes back from the other side.
• Earthquakes send a P-wave first, then the S-wave. If your tower sways at the same pace as the ground, it resonates.
• Floods rise, waves pound the base and the current scours the foundation.

Hold the side against the swing and the damper brakes it. Tap BRACE as the big hits arrive on the warning strip: the tower locks stiff for two seconds. Survive and the tower joins your skyline.

REAL ENGINEERING
Every tower has a natural period (about 0.1 s per floor). Wind load grows with the speed squared. Soft ground shakes slowly, rock shakes fast. Mass dampers, base isolators, flood walls and aero corners work in the game the way they work in real towers.

YOUR CITY
Every saved tower stands on your Home screen, lit at night, and pays rent while you are away. Spend it on engineering upgrades. New districts bring new disasters: Downtown, Harbour, Fault Line, Typhoon Coast, Ring of Fire. Every 10th contract is a landmark.

STORM WATCH
One new contract every day, the same storm for everyone, with standard engineering. Can you save it?

• Endless contracts that grow with you
• Works fully offline, no account
• One-thumb controls