Two players, 10×10 waters, five ships of lengths 5/4/3/3/2 each. Place horizontally or vertically, inside the grid and without overlap; adjacent ships are allowed. Deployment locks when both are ready. The host’s side fires first; one shot per turn, including after a hit. Coordinates cannot be repeated. A hit reveals ship type; all cells hit sinks that ship and reveals its outline. First to sink all five wins. The server hides untouched ship positions until the game ends, then reveals fleets for review. Resigning is allowed.

Rooms expire 24 hours after the last action. Refresh to reconnect; leaving ends the current game.