ART:
Beyond what you can see in the screenshots the art does feel a little amateur. Most of it is quality enough to jerk off to, but some of it is almost embarrassingly bad. In particular, the first tentacle scene you can encounter after the prologue shows Rain's one breast swinging past her arm in a very unnatural way with no other indications of movement, and her arm tapers way too much, which happens in more scenes than that.
There's also frequent bugs where Rain will appear pregnant/inflated in the cut-ins when she's not. A similar problem applies to the standing image in combat: She doesn't change her look between swollen/unswollen until the turn is over, when it should change the moment her body gets implanted.
GAMEPLAY:
Solid. The most relevant thing I think you ought to know is that you can willingly surrender to any enemy to view a sex scene instead of fighting it. This works as a way to push through the random encounters, though alternatively you can also escape with 100% chance on anything but bosses and some hornets (which I think is, ironically, a bug). You have to fight the bosses to progress the story though. I think it would have been better with the "give up" option replacing the "run" option instead of having both.
One of the main things that brought me to this game is my insatiable impregnation fetish, and I wasn't disappointed. There's womb parasites for eggs, larvae, tentacles and slime, cum inflation, double swelling, giving birth to an NPC, giving birth to usable items, lactation, and even breast parasites. On top of that, you can wear costumes that prevent pregnancy effects on breasts and belly separately, so if you don't like one broad group of effects, you can basically turn it off. I only wish you could customize it in an even more specific way because, for example, I love seeing a girl lactate but I'm not into nipple penetration or breast parasites, and I'm sure others have similarly specific preferences. Also, preventing these effects doesn't stop the combat event that causes them: "Rain's nipples are being laid full of eggs!" [cut-in of said event] "Ahhh, so good~" [nothing happens to her breasts afterward]
STORY:
Not bad- that is to say, there's not much in the plot that will turn people off after the prologue. Rain, a "Bouncer" or professional adventurer in a seductively generic porno-fantasy setting, gets captured by a tentacle monster who rapes her and turns her into a seedbed to give birth to its monstrous larvae. Eventually she somehow escapes, but not after her mind and body have been permanently made more erotic by all the aphrodisiac slime and countless orgasms she was forced to have. The rest of the story is her going on quests for the Bouncer Guild and there isn't much sense of a main conflict other than "monsters exist." There's one erotic event that seems almost required to progress, although allegedly it's possible to beat that boss without getting fucked, but if you've gotten that strong, nothing else in the game will challenge you after that. As I said briefly under "gameplay" you do give birth to an NPC at one point if you get fucked by that boss, and the character rapidly ages to the human equivalent of about 10, but there are no erotic scenes featuring her.
Overall pretty good. After coming back to edit my reviews to comb through and make sure they comply with a rule I wasn't aware of, I haven't played this game again, but I can definitely see myself coming back to it. I play this game every now and then. When I'm having trouble jerking off this one'll straighten me out real quick, just have Rain-chan throw off her panties and run defenselessly around a field of whatever monsters I find most palatable at the time. Mmm, that's good rape.