Chrome 42+ disables NPAPI plugins like Unity3d plugin.
Copy and paste the following text into your browser: chrome://flags/#enable-npapi and enable the NPAPI plugin.
Or try another browser like Firefox
In this 3D fighting game you must fight against the computer or a friend. Player 1: Use the WASD and 123 to attack. Player 2: Use the arrow keys and BNM keys to fight.