Red uses the arrow keys to move, down to parry, and m to attack. Blue uses wasd to move, s to parry, and q to attack. You cannot move while attacking. You cannot move while parrying, and you still get knocked back by the blow. Falling into the water will kill you.
Music is from Mutiny, by Nitrome. Intro music is O Fortuna. I found the pirate and sword images from google images. The sound effects were clips I found online. I might put more stuff in (more maps, support for customizable colored pirates) later. Let me know what you think.
