I love the Animal Crossing-ish Penguinese sounds!! And the cleverness of the system messages and pulling the username :D The sprites are cute and this is a really fun use of tetriminos!
I really like how pieces can snap to things from the side, including the walls -- opens up a lot of possibilities! And I like having to control both the penguin and the blocks at the same time, tickles my brain!
Please make more!!