What started it all, eh?
Very fun game, and it's no wonder why Pico got so famous. Other than that, the music fits in very well, and the somewhat cartoony graphics somehow fits in the same way. Not only that, but this game has the best boss fights I've seen in Newgrounds. All that, and just look at how far back Pico was created.
Anyway, very nice work, and I can't wait for Pico's School 2.