I really agree with the levels being too simple, I have had times where I think a mechanic will be obvious but to many it isnt
So I really wanted to have like a tutorial level which will just involve that 1 mechanic and be very simple.
They were quick to make and I was running out of time
So I really managed to just add tutorial levels which explained a mechanic and didnt challenge the player at all
(If u also did drop the humans on the tables.. that was a bug it seems, which I completely missed)
I couldve done more but I spent a literal whole day making the grind lines working that are animated when aliens are placed or removed to show connection. They are still buggy and now Im remaking that system with a different approach.
After that, ill try to think of more levels that are actually complex and dont require a random drag and drop xD
Anyways, I really appreciate you trying the game out and giving honest feedback! :D