Hey Kalyha, nice to see you being active in the thread and responding to feedback. I just finished the early version of the game. Thought I would write up some feedback myself.
The good:
I fucking love how evil the protagonists is. There are so many games where you have a bunch of girls falling in love with the protagonist and the protagonist is really lovely and nice to them, so having a game focused around blackmail instead is great.
The renders look really good. The tits are really big which might turn off some people, but I like it especially since the game isn't too realistic anyways.
I like how the mom wears a bunch of different outfits, so many game have the characters wear the same outfit for the entire game.
I also like how the protagonist becomes more bossy even outside of the sex scenes, like having his mom do all the housework and generally being disrespectful towards her. It underlines the change of the power dynamic well.
In general the corruption of the mom is really well written. I really enjoyed gradually reducing her resistance and breaking her in one photoshoot at a time. This is probably what I like most about the game.
The bad:
Sounds. There is no music, there are no sounds. Nothing. Nada. Nill.
The English: while the story is well written, English doesn't seem to be your native language. There are a bunch of spelling errors ("bonner" instead of "boner", "responsable" instead of "responsible") and a lot of the sentences sound really stiff and unnatural. I am not a native English speaker myself, but I can still tell.
No effects of any kind, like for example it would be nice if the screen would shake a little if the protagonists slaps his mom's ass to give it some impact. Or maybe have a white flash when the protagonist cums, like a lot of games have.
Currently no animations whatsoever during the sex scenes.
Overall I really enjoyed your game, so thanks a lot for all the work. The two things I would personally really like you to improve on is adding some sounds/music and getting someone to proof-read your script. Good luck with the project!