You need to look at your payment structure at 10 credits for a dollar the gems are just too expensive to purchase. If you lower the price you will receive less money per transaction but more transactions then you get now. Until the prices become more reasonable I can't afford to pay to play this game even though I would love to support the devs.
The music is amazing in this game, why can't I find the credits page to find out who made this truly exceptional piece. I love the game and play it every day, but when it comes to these games its the repetitive music that eventually makes me sick of them. I have stopped playing a number of MMO games for that very reason. The game play is fun, but whoever is doing your music really has done this game a great service and you should cherish them.
 "Infinite Hero"){kind=icon}
 "The Grinns Tale"){kind=icon}
 "Time World"){kind=icon}
 "Hero Zero"){kind=icon}
 "Clash of the Dragons"){kind=icon}
 "Moonlight Differences"){kind=icon}
 "Platoonz"){kind=icon}
 "Antbuster"){kind=icon}
 "Stick Hero 3"){kind=icon}
It's just a nostalgic, comedic throwback that has no impact on the game. =)