I just bought the game and haven't played much yet, but what I really liked was the amount of characters and how they interact with the monsters in battles,I find it wonderful to see their nipples get fucked and grow during battles, Among them I could say my favorites are Sasha and Skyler, I love their looks and hope you will use them in later projects.

another thing I really liked were the missions you do with the characters, this makes each one important in the game and extends the gameplay more, I also liked the enemies that have different colors and are very strong, it causes a greater difficulty and consequently a feeling of reward when you get something

One thing I missed that you could give a little more attention to is the nipple growing scenes, in worm nest 2 there's a scene of its own for nipple pregnancy, You could also do more elaborate Nipple birth scenes which are one of the parts I like the most, Also you could put battle songs based on 1, 2 worm nest which gives more excitement in battle, and also, Maybe you could put an option to provoke enemies to fuck her nipple, in addition to paying more attention to parasite growth. I made a point of making her nipple fucked to the max, and I was hoping the final scene would have a pretty elaborate scene, but I understand you focused more on characters and mechanics.

Anyway, I should have suggested this in the demo, but the game turned out wonderfully wonderful, I hope some of my suggestions will be used in an update or in future projects.