Whether or not "visual novel" is a genre, a sub-genre/modifier for other genres, or a pejorative term is unclear, as connotations differ by community.
Visual novels are effectively seen as a digital evolution of Choose Your Own Adventure books, with music, pictures, and occasionally even voice acting or movies.
A related term to visual novel is "sound novel", which was originally used by Chunsoft for their visual novels, as they relied on sound in order to help convey the story.
Today, however, the two terms are considered to be readily interchangeable. If you want to take a crack at creating one of your own, we've got you covered.
There are 50 tropes (and 1 trivia) in that poster: Absurdly Sharp Blade, Always Save the Girl, Awesome Mc Coolname, Awesomeness Is Volatile, Badass Grandpa, Badass Normal, Bald of Awesome, Big Bad, Big Damn Heroes, The Cameo, Censorship Bureau, Cluster F-Bomb, Complete Monster, Convenient Enemy Base, Cool Old Guy, Crowning Music of Awesome, Deadpan Snarker, Distressed Damsel, The Dragon, Fragile Speedster, Guilty Pleasures, Hands Off My Fluffy!
, The Hero, Implacable Man, Impossibly Cool Clothes, Improbable Aiming Skills, Jump Cut, Knife Nut, The Lancer, Lightning Bruiser, Locking Mac Gyver in the Store Cupboard, Magnificent Bastard, Media Watchdogs, Mighty Glacier, Mooks, Most Writers Are Writers, The Napoleon, Prima Donna Director, Rated M for Manly, Reaction Shot, Rule of Cool, Scary Black Man, Sexual Karma, Shoot the Money, Shot Reverse Shot, The Smart Guy, Smug Snake, Stuff Blowing Up, Unrated Edition, Wag the Director, and Writer on Board.