It's really good, and really sweet, and really sad.
And the YTMND flash version is even sadder, the way it's presented with music.
I'm not going to spoil it, so the rest of what I think is behind the cut...
It really is wonderful... the game gave this guy's mom something to do. Multiple Sclerosis had clearly made it difficult and impractical to get out and do much. But here was a means to do some kind of exploring of a world, to meet some challenges.
And she spends all that time doing things for her children that she knows she doesn't have a lot of time left to be with. She did for them in a game what she really couldn't live, because of her health. She knew they had quit playing, she knew they might not find the things she left for them while she still lived, and maybe not even ever. And she did it anyways.
This is both the most beautiful and the saddest thing I've ever seen online. I'm absolutely in tears from it. I'm hardly insensitive, but for whatever reason, I rarely physically react this strongly to anything.