A few questions about the current state of the game. I just discovered this game and I'm having a lot of fun. Better than most mobages out there. But I'm worried that I came late to the party. What is the current state of the game? How often MW releases new content? How greedy it is? There are some active gift codes available? 

I have been playing it for 2 days and it seems that the biggest issue is the stamina cost. Every new chapter ask for one more point of stamina per stage. Does that cost stabilizes with time?

Thanks.