Tower Defense is an excellent game truthfully, the devotion and multitude of updates created are quite nice. A few acquaintances of mine have pondered the thought of a ranking system. In which based upon your wins and losses, your rank is calculated, and you could also create specific groups to participate in a league. I don't necessarily see many complications as Tower Defense does not happen to be the most popular game, nonetheless, this also happens to be Minecraft, in regards to the fact that individuals would not typical be as farcically serious about a league. I would be delighted to see this, but of course understandable why it would not be fulfilled.