At first the concept seems odd and you fell like the game's gonna suck but the thing is that it's actually a new awesome
The artwork and graphics of the game are good for an rpg. Camera settings come in handy and the interface is really neat. The graphics are consentrated in the dungeon, because it's not a necessity in the town were you buy stuff and accept new quests. The artwork in town is still nice.
The music isn't annoying, but tend to get repetitive in the dungeon. I haven't made a second, third, fourth or fifth floor yet so I don't know weather it changes. At leat the BGMs don't get on you're nerves.
For 40$, this game is well worth and I suggest you at least give it a shot. I doubt you'll be deceived. In the end, this game is a totally new concept which proves to be effective and entertaining for the player. The gameplay is really the best part even if the bgm and value is penalized.