Board Thread:Game Discussion/@comment-5573466-20130505204212/@comment-8284783-20130514184400

I know Rage of Bahamut has been around for quite a while (which could obviously be considered a major source of inspiration for this game, as well as the slew of other "social CCGs" clones), and it is still doing very well in the sales department (newer clones came out and, although they tend to do well at first, a lot of them ended up forgotten, there are still a couple other, similar games that are still around, but I think RoB is still the biggest moneymaker).

Other than that, there are other games that have been around on iOS for a fair amount of time, like Angry Birds and Plants vs Zombies. Although Angry Birds has had several spin-offs and sequels, so I'm not sure you could really count it as being the same game still being popular.

And I agree about the license being a huge plus for this game. I think it's what got most players into the game, and Transformers has been around for ages, so that's good : )