Okay, it's been a long time since I hit the 'shop' icon in a mobile game and it takes me to the shop for swords and armor, not 'Buy 1,000 coins for $2.99'
That said, it took me a minute to warm up to the game, but once I did, it's been a blast! The controls are simple (think Tiny Wings except you get to destroy castles, eat knights, and dodge lava), the upgrade system is fun as you buy huge swords for your princess and dragon armor (and you get coins at a rate that actually lets you upgrade at a reasonable pace) and overall, a great little game!