Dusk, begun as an informal collaborative effort between two random Corona users, is now possibly the most powerful Tiled map loader and game engine abstraction layer currently available for Corona SDK. It's fast enough to handle however many tiles you throw at it (come to think of it, I've only tried up to twenty-five million - but I'm sure that's plenty for most people... right?), powerful enough to build anything from the simplest maze game to the most complex MMORPG the world has ever seen (assuming you're that good of a programmer, of course!), and simple enough for your six-week-old baby to understand how to use it (as long as it can learn Corona SDK first). And if that's not enough, it also comes with a built-in camera system, smart property loading, a custom-made serialization notation, and integrated Box2D physics. And if that's not enough, it's also completely free and open-source. And if that's not enough, it also has a really cool name. And if that's not enough... go find something else to do. Or draw me an infographic of your six-week-old baby learning to use it. Or something.