Hello!
This looks great, good work indeed.
You mentioned in a previous post about whether we would be interested in a tutorial or blog about the development of the multiplayer aspects of this game. I would really enjoy to read this Scirra provides a some reference reading but it would be great to read something applicable to having a live game, especially for the matchmaking aspect.
I am only just starting to consider how multiplayer will work for my game, but it would be great to go through and share and compare ideas. For example, I will be using Elo system in my MySQL database to try and sort out matchmaking but I would be interested to see what others do, especially private matchmaking/inviting friends.