Ok, the game itself is bad, probably.
So why I am giving a 3 star which is average:
First, why is it bad?(2 stars) gameplay is extremely simple, consisting of 2 parts; planning in which you can add monsters to the layout created before, and sabotaging the heroine in her escape.
For planning, you have 1 tab with monster and viper lord. You can level up viper lord or buy new monster types, then a tab to put those monsters using mana($$$). Nevertheless, you barely have to use any monsters... slimes to charge up power, and flying monsters to drain stamina, and you are golden.
Sabotaging is using 2 buttons, shift or CTRL, shift to reduce resistance, and control to do some damage. That's it, the entire game.
Art wise is also bad-ish, the proportions are exaggerated (which is a minus in my book). The game is censored (at least at the time of playing it) and there is barely any content, I finished both normal mode and hardcore to unlock all CGs in about 40 min.
Now why the 3rd star? For creativity. I have not seen any similar game in which you sabotage the heroine directly. There are some in which you are the bad guy like she ill server, or goblin conquest. But having this method be a lot more direct intervention of the player is nice. So points for trying something new.
I think the problem is not the idea but how it was executed, having better art, not being censored, have more fluidity when telling the Story, and make the sabotaging more interactive (not just 2 buttons) and it could probably be an excellent(5 star) game. Not a masterpiece, but something different and memorable