From Emanuele Feronato: "If you liked the post “String Avoider” HTML5 game updated to Phaser 2.6.2 and want to continue in the creation of your own string avoider game, there is something more to keep in mind if you want your game to work well on mobile devices.
First, we have to fix a graphic glitch due to Phaser (and PIXI) lineTo method, which causes a graphic error when the angle between two segments drawn with lineTo method is too close to 180 degrees.
This is what I mean ..."