we have designed a multiplayer arena game with Christmas theme , please check it out at http://thor.iprefer.com.tw/iprefer/labs/christmas2015/MainApp/ we use pixi.js for 2D rendering, node.js for multiplayer to function. since It has just launched, there aren't many users online. you might want to find a friend to try the game together. we use typescript for both client side and server side development, it saved us a lot of efforts when constructing complicated javascript project. any comments are appreciated ~ Thanks !