I have in fact skimmed through the encyclopedia, and read the dialogue. I've completed several quests, but fact remains that games are games because they are built upon gameplay. They can center around a story, sure, but you do need at least barebones mechanics to draw the players in.
If there's no player choice/agency involved, the dialogue and quests really aren't much more than padding. Perhaps if they told a story, but they're really not up to that level.
Also, that 3-4h of gameplay becomes 20m of gameplay if you use a speedhack to skip the walking, since that's what most of the game consists of.
Sorry for kind of being a really critical asshole, btw. But the art is really good, and your setting while perhaps not fascinating, is unusual, and it would be a shame to see nothing come out of your hard work.