The original NieR (just now re-released as NieR:Replicant) is also notable for having an amazing soundtrack with the lyrics being constructed from a totally made-up language. And the layering of the score as you go into and out of combat is nothing short of masterful.
The first game holds a special place in my heart and playing the remake now is bringing back a lot of good memories. It's kind of odd but self-aware and the characterisation of a talking book is utterly astounding.