I wasn't expecting a full experience there. That was a lot of work for such a short time. Generally speaking, these types of games aren't really my cup of tea, but I can appreciate and respect the hard work you put into this. I made sure to play it until the end. Like everyone else, the random stone sound effect at the end startled me. I had forgotten that people had mentioned that, so it totally took me by surprise, haha.
I have to say, I was very impressed by how polished this was. I purposefully tried to find a bug, and I only found one. That's not bad at all. Great work. The one bug I did find was if you leave the factory after collecting the teddy bear, and then return, the teddy bear comes back even though the portal is open.
The reason why I said this isn't normally my kind of game is that I like doing stuff in games, whereas this was more of an interactive story. Nothing wrong with that, and I know a lot of people really enjoy that. With that being said, I did enjoy a lot of the dialogue. There were definitely some humorous moments. The plot was pretty good as well.
I also really enjoyed the choice of a Gameboy Color. That was one of my most favorite systems growing up. The visuals were very well done, and it really did feel like a Gameboy Color game. I'm bummed you didn't have a chance to add any sounds (minus the stone sound effect, haha) or music. I think that would have really added to the game's mood.
It's also worth noting how impressive it is to have made both a web browser version AND a GB ROM version. Just programming a GB ROM file is mind-blowing. I know I don't have a clue on how to do that, so props go to you on that.
Overall, even though I don't play these kinds of games often, this was very well-done. If you had managed to include a soundtrack and sound effects, this would have been a complete package. Honestly, with the exception of the one bug I found and maybe a little proofreading on some of the dialogue, nothing really needs to be changed. Fantastic work! You should be very proud of yourself. :)