WOH is a turn-based rogue-like, themed around classic horror mangas, with a pinch of Eldritch horrors in it.
Visuals are great, although the style isn't for all (the "1-bit" graphics are exceptional in capturing the feeling of an ancient PC game of sorts, as well as the manga inspiration). The design of the grotesque enemies you encounter is also great, and even the sound and music feel very "appropriate", for lack of a better word.
The gameplay, at its core, is just a series of random encounters, triggered by exploring the locations you have available (each location has its own set of encounters, although I assume some are universal).
The encounter might then expect you to make a choice (and usually test your stats) or to have an item available to automatically get a good outcome. Items can be found during certain events or bought in stores (but the selection is random, and funds can be scarce). Almost all actions increase your "doom counter" and if it reaches 100%, it's over (you can also die by losing all stamina and/or reason).
The other type of encounters are fights. They are simple, but with some elegant choices, like focusing to increase your chance to hit (even up to guaranteed hits), dodging and so on, while managing the equivalent of your "action points" bar each turn to survive. Fights also have custom systems for specific enemies and for ghosts, at times unlocked by learning more during the exploration phase.
The gameplay works together with the themes (it really feels like a twisted horror manga), as you investigate weird events to stop armageddon. Survive 5 mysteries (each with several endings), and you'll be able to tackle the final challenge.
The one flaw is that once you know a mystery, replaying it is much easier, but there are a lot of them, and there is lot of variety in general. Development has also been historically slow (more updates are planned after 1.0).
I strongly recommend this game if you like this type of rogue-like.