Maple Story is one of the most successful MMORPGs thus far, with over 100 million users worldwide. It’s also one of the first 2D side-scrolling MMORPGs made. So it only makes sense to bring the experience (albeit single player) to the iPhone, after releasing it on a numerous number of mobile phones.
I will admit that I did play Maple Story at one time and was a complete newbie at it. I leveled up to around level 30, then decided to stop playing since I had other things to do, and the game started to get a bit boring. The multiplayer experience wasn’t all that great, but leveling up by yourself and buying items from the shop was probably the most appealing part of Maple Story.