I have been into the game for over 300 hours so far and the cost was only 6 bucks. I can not find any other better deal, literally. Besides, the cultural/historical references on the eras of Imperial China were well researched and fascinating to know. So, you can learn Chinese culture/history spontaneously just by enjoying the game. If you like city building games in general or love to enjoy and learn new things or the both, this game is for you.
The art style and music are both fantastic, and I enjoyed it a lot on my first run. But the gameplay became repetitive after that, because the dungeon is not randomly generated and the main storyline is the same old. There will be deja-vu here and there after your first run. But in overall, this is a quality rouguelike/hack and slash game.