Truly a marvel when you consider this was the work of just one guy.
A fun and varied world and an interesting way of doing quests and progression. My only complaint would be that once you found your optimal strategy the combat will become rather stale after a while.
I did feel the burn-out in the later stages of the game and the game is so filled with death and betrayal that Code Geass comes to mind as perhaps a primary inspiration.

Overall I'd say the game is certainly worth it and my just about 40 hours were very well spent.