Feedback link doesn't work, so will write here:
Game is fun, but I feel you are way too zoomed in in order to react properly to the enemies. I don't like that the amount of enemies doesn't decrease after losing baby penguins.
Very interesting concept. The difficulty is good, as it rewards the player for having a proper understanding of using the "ghost" square. It takes a while to get used to using the ghost, but that's probably just me being stupid xD. Great maze design, as certain parts rewards the player for checking rooms with the ghost.