Yeah, that's unironically a big issue with the tag and exactly why this game in particular is great.
Most still-active corruption games are very,
VERY light in actual corruption and extremely broad in what they actually mean by it and, sadly, tending to tag games as corruption-based even though they barely, if at all are also means doing the same with "transformation", which means attempting to filter out those without actual physical changes just won't work either. Doesn't even need to be multi-level, seeing
any visual corruption within games who would apparently feature it has become a thing of rarity.
Worst part is that games who succeeded in the past with this were abundant and fairly popular at one time, then suddenly barely anything new started to come out for it.
Village of nightmare and its follow-ups were big names at the time, yet since then games who took inspiration from it
barely have physical transformations if they even do, despite it being one of, if not the biggest appeal, and sadly the creator(s?) seem to have disappeared. Still, things like
Corruption and
deviant discoveries released later around the same time where those kind of games were seemingly the most popular among the others around here, yet nowadays barely nothing new releases in that trope and even those two games didn't end well, the former getting worse each update due to vanilla-fanatics' feedback and the creator releasing a far worse game, and the latter just getting straight up abandoned.
There's still gems appearing here and there like this game, Tjord's
The fall series,
bloodlines and some few others, but this is still so far below the peak corruption games used to have a few years ago despite soooo much more activity around adult game development. Hell, I roam every few months on the recommendation threads asking for games in that trope, and most of the time the threads are entirely empty except for a single guy sharing the same handful of games every single time along with the general
bimbo thread, which are still great recommendations mind you, but also another sign of how stagnant that game genre has sadly gotten.