This review is for v0.6.1
This is probably the most basic "trainer" game I have ever played to the point that calling it anything more than a glorified visual novel with extra steps would be a lie.
All you do in the game is repeat a few events for resources, get trained in some very basic magic (hypnotic suggestion and "transformation"), and then just repeat until you hit the end of content, which only takes maybe two hours to do unless you don't read the dialogue since there are no choices to be made in the game except at one point where you decide if you want futas to be in the game or not.
The decision to keep to the original art style of the show was certainly an admirable one, but it sadly hinders the sex appeal of the scenes greatly, and the corruption/training aspect of the game is really non-existent beyond just giving the occasional nudge in whatever direction you need.
I will say, the one thing the game does well is the plot (not the writing though because there is a lot of typos and other issues).
You enter the world as someone from our world basically, having watched the series of SvFoE when it was airing all those years ago, so your character doesn't really need to be introduced to how things work outside of just covering the basics of what might be different.
Honestly, that aspect alone is a massive saving grace for the game, but since it also ends up depriving us of the opportunity to corrupt the mom since apparently vanilla Marco had already done the legwork on that, so we just get to reap the benefits of blowjobs, tit jobs, and pudding.
Unfortunately, having a decent enough plot is not enough to save the game as is since the gameplay is extremely repetitive and bland while the sex scenes are just meh at best.
If the gameplay was reinvigorated to be more than just a grindfest and the art changed to a more attractive style rather than sticking to the original design quite so much, then I could see myself upgrading this rating to 3 or 4 stars [insert Star pun here].