Another trap that a lot of "porn game that's a REAL game too" games have is that the devs tend to forget that people are there to fap, not to minmax stats for half an hour, respec and test out a glass cannon build so they can hopefully take out G'sniax, The Destroyer and his army of skeletons, they're there to bang the princess that G'sniax is guarding. If there's any cutscenes, they're getting skipped unless there's some naked chick there too.
If a player has 1 hour of free time to play lewd games privately before bed/work/whatever, and the epic battle lasts for 2 hours, they'll just leave disappointed, never able to fap. (I mean, if the skeletons are all busty as hell and get added to your harem as you kill them, then maybe...)
Or like, the player's edging as he enters the princess's tower, only to find one of his old party members standing over her torn corpse with a knife stolen from the MC in the last chapter, doing so to frame the main character because of some old blood feud as the game switches to a long cutscene about that party's backstory, and about the current plan to use the princess's death as a catalyst to turn the whole nation into a heaping wreck of wars and famine, all while the player's got a deflated dick in his hand and the main character goes into a depressive episode, the next half-hour of the game spent with him haunted by what could've been, what could've stopped that party member, who set him up, why him?
Like, man, I complain about it a lot, but BE Witches does this shit hard. It's a game all about breast expansion, but you get one tiny scene at the beginning of the game going from like flat to an A cup, then you get not one single lewd scene for like 4-6 hours, barely even any tiddy monster characters, and the plot has your mentor die from a spooky horror monster thing, you get thrown in jail, you meet someone with amnesia, you escape death several times, etc. Even then, the implementation of "breast expansion" in the game called "BE Witches" is just some one-off upgrades you get by finding optional collectables, and it's just swapping their image to the next size, rather than really being anything about "expansion" like you'd expect. Might as well call it "Busty Witches" or something, with how little you get to actually watch boobs expand.
What's funny is that even though the dev puts in most of their effort in the gameplay, it gets repetitive fast, so after like 5 hours of this, I was skipping puzzles and avoiding fights just to get to the lewd content faster and never got any. Didn't care about the plot, didn't care about the characters, didn't care about the death, hated the boss fights.
Doubly funny is that the dev didn't even seem to notice or care about the lack of lewd content until I pointed out that having 1 tiny BE scene within the Steam return window for a game about breast expansion is a stupid idea and a quick way to get a lot of refunds.