Nearly everything about this game is a work of art. Most often, people tend to skip story in order to get to the sexual content, I actually found myself skipping one or two sexual scenes to get back to the story.
Graphics/Art: Damn near perfection. I was initially concerned that it would be low-res garbage when the download was only ~800mb, but absolutely not. These are good quality renders and obvious care taken with some touch ups. Scenes are well varied, good quality, and its obvious that lots of thought was put into them.
Audio: One of the key components of an engaging and immersive game, is audio. Sooo many devs fail to grasp this simple concept. This game does it right. The background music is well suited to the situations. Its subtle enough to enhance the gameplay, while keeping in the background.
Story: Holy mother of god, what a great story. Yes, it is heavily based on religion, but more along the lines of Stargate than anything else. The way it is told makes it all the better as well. Yes, there is a significant amount of narrative involved, but its good. Not only are you getting internal monologues for the character(s), but relevant history for the story. I'd honestly pay retail pricing for the story in this game to become a full fledged proper retail game!
Gameplay: Throughout the game, you'll be presented with options to choose from. Although each chapter will end up at the same point, HOW you get there matters. Your choices dictate the direction of the game overall, as well as what scenes you get. However, the dev has included an actual flowchart as an option in the game, so you can see the route you're taking in comparison to all available options. This is helpful in terms of replayability for scenes that you may want to go back and get, and how to get there.
One note of warning, which needs to be mentioned. There IS a scene of rape to one of the characters in the game. The scene starts out technically consensual, but ends up going another route. Its not NTR, because the person is not entirely significant to the game, nor are you romantically pursuing the person. You are not the person performing the rape. It IS part of the overall story however. If this is something that could cause you issues, please keep that in mind. To my knowledge, you cannot skip it, but you could just look away and rapid fire mouseclick/space bar (Although you do have to make a single "choice" during the scene) until its over. That being said, you do get to, somewhat, make things right later.
That all being said, great job by the dev, and I was more than happy to jump over and support his future projects.