PARAVANE

PARAVANE is a minesweeping game. You captain a shallow-draught trawler clearing a buoyed channel while a convoy of four deep-laden ships steams up behind you. They strike any mine left in their water; your own hull rides over moored mines untouched.

You sweep with a serrated wire towed between two paravanes seventy metres astern. The wire follows your wake and covers the water you crossed ten seconds ago, so you steer your past track as much as your bow. Full ahead spreads the wire wide; slow ahead turns tight and narrows it. Cutting a mine sets it afloat, and the current carries floaters back toward the channel. You sink them with rifle fire. Shots fly straighter from a slow deck, and slowing lets the convoy close.

Score pays for mines cut, mines shot, and every quarter mile the convoy makes good with ships still afloat. The run ends when a floating mine finds your hull or the last ship is lost.

Built as one HTML file: canvas rendering, a verlet rope simulation for the tow cables with velocity-perpendicular lift holding the paravanes out, and WebAudio synthesis for every sound from the engine chug to the convoy horn.