This last years of internet, the PDF blessing has opened the market to lots of new creators and publishers not alligned with the market titans (Lawful evil by the way). This has allowed for a new style of gameplay and new world ideas to start reaching the target market.
Additionally, the program includes treasure, plot ideas and encounter generators, as well as an integrated card action resolution system (cards must be bought appart in the print or digital version, but are included in the app). All of this, beautifully illustrated and even with a exclusive tab just for the Artbook accompanying the game.
This already is reason enough for the game to be a must, and also a reference for all future RPG's, but level99 games has gone one step further: when you buy the game, you gate an access code for the beta of Living Mystic Empyrean, the online game support site, where you will be able not only to create and access content created by other users, but also to download it for the app itself, thus creating your very own campaign database in the app. For this reason, no two apps will be the same as you can always be adapting your contents or producing new ones.
The world of Mystic Empyrean is a void world, in which an Aether mist has consumed almost everything. Through the use of Cornerstones, remains of the world as it once was, Eidolon can recover fragments of the all world and merging them again. But these new world pieces are created by the players themselves: They decide the aspect, the people, the government, tech level... each time an Eidolon releases a Cornerstone he can recall pieces of the old world, but also paradigms or ideas forgotten by the inhabitants, like magic, the existence of heaven, or internet access.
The progression system is also a great idea. The XP reign is over. I know you are all a bunch of munchkin powerplayers. After each session, the player passes his character sheet to the player on his side, and that player will decide how the player progresses depending of his playing style during the game. So you become a reflex of how others see you, instead of how you want to be. So if you want to be a proud warrior, you will have to play like it!