Promotional artwork of a turtle ship sailing through a stormy sea

BROWSER PLAYTEST

"I still have twelvewarships at my command."

(今臣戰船尙有十二)

— Yi Sun-sin · English translation

Bring the enemy alongside. Let your cannons answer. A naval survivors-like prototype where your heading shapes the fight.

Play now Take the playtest survey See the combat

Try the current build. No account required to play.
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Inspired by the Imjin War · 1592–1598A course worth taking

Promotional illustration · in-game title artwork

01 / THE FIGHT

Your broadside.Your opening.

Weapons fire automatically. Your task is to accelerate, brake, and turn—keeping enemies beside your ship instead of straight ahead.

Explore the combat

Actual HAESIN combat: player warship, surrounding sea, and battle HUD — Actual PC gameplay · web visuals may differHAESIN / 3D

Position first. Fire follows.

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02 / THE PEOPLE

A sea withhuman stakes.

The Imjin War is the historical frame. These approved portraits introduce its figures; the current playtest puts you at the helm of a ship, not in a character-selection screen.

Meet the historical figures

Joseon naval commander

Yi Sun-sin

Japanese naval commander

Wakizaka Yasuharu

Joseon naval commander

Won Gyun

Historical portrait · not a selectable character in this playtest

03 / YOUR NEXT VOYAGE

The next salvois yours.

Try the build, then tell us what worked, what confused you, or what kept you from playing.

Play now Take the playtest survey Controls & playtest notes

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