Star Sovereign is a realtime multiplayer space shooter implemented in HTML5 / WebSockets / WebGL that pits players against each other in a fast-paced, action-filled deathmatch. It is currently under development (early alpha). You can play the game here: starsovereign.com
Adding walls and obstacles to the map. The main fights should occur in the center, but you can sneak through these spinny wheel things to try to snipe the enemy's star.