This is an awesome little game. By far my favorite game that you've made so far. Please consider expanding upon this and releasing it as a full game.
Ok, so now that I've had the chance to play a decent amount I think I've formed a complete opinion. I definitely think a lot of things could be improved but that's to be expected with an early prototype. I genuinely enjoy playing this game and think it would be very good if expanded upon. I can't speak for anyone else but I know personally, if this were to be turned into a full polished game I would buy it on steam. Definitely already some good suggestions in the comments so possibly even implement some of that.