After completing the visual novel a few times, I have to say this game is amazing. It's one of the few weight gain visual novels I've played that has an interesting story and characters (even the main character). All of the characters have unique personalities and their relationships with each other evolve as the story progresses.
I think the visual novel has a perfect balance of story and the fetish side of things. I never thought once there were scenes that dragged on too long before seeing any weight gain and stuffing scenes. The stuffing scenes were all great. The dialogue between the characters involved was well written, the sound effects of burping and stomach gurgles were perfect. There is farting and fart clouds, but only in a couple of scenes, it is very burping focused. I personally don't like the farting stuff, but it happened so little that it didn't ruin the mood of going through the story. I thought all of the sounds came at appropriate times when characters were talking with each other without disrupting the mood of the current situation.
There is a card game built in the visual novel that pops up throughout the story when the main character and group come across enemy npcs. It's simple to understand, but you can create some pretty crazy complex decks if that's your thing. You receive new cards as the story progresses. I'm personally not into deck building and was able to use the starting deck throughout most of the game.
Regarding the art, scene backgrounds, and character designs all looked great. There is only two or three scenes with minor characters in it that looked weird in my opinion.
My ending thoughts are this game is worth the price. It has a lot of replayability with the different endings you can get, but also with going down different conversation paths with characters to learn more about them.