NPD is tracking hundreds of thousands of transactions to provide a look into the trends on mobile, and now it wants to share that with developers and publishers.
Due to uncertainty over "when the next hit is" and "the catalog," public mobile gaming companies do not enjoy valuations on par with a range of other, often far less profitable -- but more predictable -- technology companies. But this will change.
This isn't the standard tower defense you're looking for. Champions and other goodies give this more character than what you find in other mobile games of its ilk.