The main metroidvania loop of collecting powerups and slowly expanding the world you can explore over time is done well- going back to previous areas isn't tedious due to the interconnectedness of areas, and it is easy to identify rooms based on layout, what the room introduces, and how they are connected to other rooms. Moreover, the game avoids gameplay fatigue by having several areas focused on different mechanics, fully exploring the limits of the new mechanic before introducing more.
The story is also quite nice- the main premise is basically a more explicit version of Shimoneta, where a future obsessed with purity and repression ends up being more sexually assaulty than the mess we already have. Except instead of a rapey and disturbing Ana, it's a bunch of robots who are forced into doing something that harms themselves and the person they're literally fucking over. It should be noted that almost all sex is between girls and machines with varying levels of sentience and human traits, or with other girls, so if that's not your thing then the game might not be for you if you just want to play for the horny (but the story is good enough regardless that I'd still recommend it). If you ARE playing to get off, the animations are quite nice and the requirements aren't too obtuse, and the scenarios presented are quite creative.