Took me a while to realize that you can turn critters so i ended up with a pile of bodies in one place, but once i did.. it does hit that assimilation braincell. i kinda wish critters walked around a bit more in general, i saw a bunch walking at the very beginning and then for the most part everybody just stood still. I could see a version of this where you have to get someone alone before draining them, perhaps using hypno to do so. Neat little prototype!
EDIT: Oh and i just remembered, the title of the game coming up only once you finished the short tutorial was pretty neat.