Harbor Defense

Harbor Defense is a coastal artillery strategy game built on a real ballistics simulation.
You command the gun batteries of an old harbor fort and stop enemy ships before they cross
the boom chain at the harbor mouth.

AIM WITH THE WIND
Press and drag on the sea to lay a gun. A dashed arc shows the flight of the shell and a
landing ellipse shows where it can fall, calculated from the same physics as the shot itself:
gravity, air drag and a gusting wind. Release to fire. Ships keep moving while the shell is in
the air, so you have to lead your target.

FIVE GUNS, FIVE KINDS OF SHIPS
Field Cannon, Long Gun, Mortar and Carronade each have their own muzzle velocity, reload,
traverse and spread. On night stages a Searchlight lights up ships in its beam. The Cutter runs
straight and fast, the Gunboat zig-zags and fires back at your guns, the Frigate tacks against the
wind, the Torpedo Launch arrives in pairs and the armoured Ironclad shrugs off light shells, with weak
points at its bow and stern.

HOLD, AUTO OR MANUAL
Each gun switches between manual aim, Auto and Hold. Auto picks a ship and leads it on its own, but
your hand-laid shots stay more accurate.

TWELVE STAGES AND SIEGE MODE
You defend twelve stages on a coastal chart, from Gull Point to Last Light, with night and storm
stages and two Ironclad battles. Three breaches are allowed; the fourth loses the harbor. Earn
up to three commendations per stage. After stage 4, Siege Mode sends endless waves and keeps
your top wave on the device.

TOWER SHOP AND UPGRADES
Powder is earned only by sinking ships. Spend it on more emplacements, other gun types and five
upgrade levels per gun, with the real numbers shown before and after. Six fort upgrades with
three levels each: Reinforced Boom, Powder Magazine, Range Tables, Signal Flags, Stone Casemates
and Harbor Pilots.

RANKS
You rise from Deckhand to Harbor Admiral and track ships sunk by type, your top Siege wave, your
longest hit streak and every recent defense.

A COACHED FIRST STAGE
The first stage walks you through aiming, leading a moving target, switching a gun to Auto and
reading the boom, one step at a time.

OFFLINE AND PRIVATE
No network permission, no advertising, no sign-in and nothing to buy. Your progress stays on
your phone.