Had a little look around for other examples of visual novels that are playable online and came across two specific examples.
Both are on deviantart, the first is by a user called ZEIVA.
To play the full game you have to buy it but you can test it out here;
'X-note is a blend between Visual Novel and Dating-Sim. Follow the story of Essi as she pursues the truth of her mother's death. The game spans for 30 days, of which you can train Essi's psychic abilities, explore the school, collect notes, and make choices to determine her fate.'
Aaaand there's another user called PACTHESIS who makes quite good, but purely dating-based ones. Their most recent is here;
but you can find the others;
Would also like to add, hellos! This my first post and I am hoping to help Team Wasabi as much as I can ^^ Expect a spammage of entries from me :D