The earlier work done in that hack is pretty crappy yeah, but that's just part of what makes it interesting. If you play through the game you'll see how the quality of the game improves.
Thats what I like about it. This game is pretty much "Look at how crappy it was in the beginning, and see how good I've gotten since then."
This game is on this list because it serves as a inspiration to new hackers. This game can give them a view of how their skills can change over time.
Edit - As for the game, Snakewood is pretty much Pokemon Ruby all jacked up on meth and LSD. Your going to see some real crazy stuff.