Chaotic and fun game! I think this concept works better with Penguins than Lemmings. I've beaten all the levels except the one where you only have to save just 1. Thankfully the game saves your progress. I also like how the levels branch out. If one level is too hard there are plenty of others to choose from. The game gets much crazier -- and funnier -- as you progress. The game is very low-pressure and about the only way you can "lose" is if all the penguins spawn and get stuck where you can't get them out.
SUGGESTIONS FOR IMPROVEMENT:
I once had a score of -3 penguins saved. Not sure how that happened.
The first level should tell you that you can use the hand to move the blocks around.