A short VN with a cast of futas and females (no males in the story), the MC takes the challenge and grows to literally giant proportions.
There's two or three animations, which are fine but are strangely not as hardcore as the subject material would suggest (bodies are shown moving, but you get no visuals of the intercourse--they are softcore, probably because of the difficulty in animation). So that's a bit of a disappointment.
Note, there's not a lot of sex (remember the title of the game?), but there is a lot of penis docking here. The MC gets docked THREE TIMES, in fact, and her balls swell each time from the impossible idea of cum transfer from her partner into her own swelling balls. So there's a very specific fetish being entertained here...so not all futa fans will enjoy this.
Otherwise, the game has great English and tells the quick story very well, but only three stars: it has succeeded on its ambition, but it' s ambition is only to be a short, average game with a very specific fetish.