From their website:
"RPG Maker VX Ace improves every aspect of RPG creation, making it not only the latest, but also the greatest engine in the RPG Maker Series. With multiple tileset support, full autoshadow control, and a flexible features system, Ace gives you the most powerful RPG making tools ever."
If you've ever wanted to create your own RPG game, or just curious enough to give it a go, the RPG Maker software is available for $9.99 (86% OFF). Most DLC's could be had for 80% OFF as well.
This was in a humble bundle a while back I believe with a good amount of DLC included, picked it up then. This still looks like a decent deal for those who missed out, or those who want to pick up some additional DLC for their humble.