Be forewarned, some parts of this game will require the most cryptic actions - even in the context of Yume Nikki fangames - to let you progress, but don't let that sway you from giving Yume Tagai a try! Visually it holds itself high above the masses, even in this particularly pixel-art-focused genre already filled with powerful artists, and I'd say it's worth looking into for that alone; it has its fair share of particularly memorable locales as well.

Deeply unsettling in a way that few other fangames that emphasize gore can accomplish, but also one of the most polished fangames with an intense attention to detail and a uniquely haunting world; .flow certainly earned its notoriety.

This fangame is somewhat weird in the way it goes about things, and there are certain areas/effects that I don't know how to progress through... but the aesthetic and general nature of the game is as unique as its main inspirations.
I will gladly wait as long as it takes for an update.