If you are looking for something cute, lighthearted, polished and filled to the brim with catgirls then NEKOPARA Vol. 1 is the obvious choice. Even without the h-scenes, the Steam version is an enjoyable, albeit slightly short, romp. The E-mote system works quite well and the artwork by Sayori is absolutely gorgeous. It is not as long or as involving as some other kinetic novels, but serves as a very polished and enjoyable introduction to the genre.
Gameplay: NEKOPARA Vol. 1 is a kinetic novel, so gameplay is restricted to simply clicking through the story.
Graphics: Beautiful artwork by Sayori and the animation is a lot livelier than what is the norm for the genre thanks to the E-mote system.
Sound: Full Japanese voice acting for the catgirls, plenty of sound effects and some very nice tunes