Promotion. The most important thing about selling a product is to let people know about it and make them talk about it (word-of-mouth marketing). I learned about graal by scrolling down over 50 apps searching for mmo's. I downloaded so many until I got to it. I recently googled 'Graal Zone Ipod' to see if any blog/page talked about it and very few do and most of are from when it got released (and thy are mostly bad reviews about having many bugs). There's many ways to promote the game without need to pay for adds like asking reviews from apple/android games sites, mmo sites, posting on blogs/forums. Graal could even have a Promotion Team.