Wow, this is a cool game, and feels very Game Boy-y. It actually reminds me a bit of a game I used to play on my Ti-84 calculator (but way better). The gameplay in this is way more complex/deep than it looks. I definitely got stumped a few times. At first it felt like that one cave in Pokemon red where you have to slide on the ice, but the box pickup mechanic makes for some really interesting puzzles. Great job!