Wooow. Great logic puzzle game. The idea and puzzle design is amazing. The Game is in general really well made.
Level 8 introduced losing a round when you deliver too many wrong little guys, which made it a lot harder and sooo much more interesting. I really wonder how many levels you built and how difficult it gets in the end. I haven't beaten level 8 in the short time I had, but I might try again tonight.
Two tiny things: Restarting the level after failing feels a little bit laborious to me and rotating with the mouse wheel would be great for playing the game while leaned back!! :D