Games like Halcyon
Requie-mu
Requie-mu is a traditional Japanese Yume Nikki fangame.
ColourS
ColourS is a Japanese Yume Nikki fangame. The primary goal of the game is to explore Midoritsuki's dream world and collect effects. One interesting element of this game is that the majority of the dream world is initially in grayscale. There are several colored orbs hidden in the dream world for the player to find that will change the appearance of certain areas once obtained, also granting the player access to new areas/effects.
YuMayhem
YuMayhem (夢異変) is a Japanese Yume Nikki fangame.
Fracture: The Dream
A sudden and seamless realization of consciousness... Play as Monoe and explore a Labyrinth of interconnected worlds, wherein you discover secrets and come to shocking conclusions. A 3D Yume Nikki fangame developed for Dream Diary Jam 6.
Cold
An English Yume Nikki fangame developed as an entry for Dream Diary Jam 6. You play as Aruben who wakes up in a strange place, surviving and exploring his Cold dreams.
Dream Journey
Dream Journey is a Yume Nikki fangame created for the 2017 Dream Diary Jam. It stars MC, a nonbinary character with no real name. It's a traditional fangame, based around exploring MC's dream world and collecting effects. As opposed to a bedroom, Dream Journey takes place on a moving train.
Dreamy Idea
DREAMY IDEA is a traditional Yume Nikki fangame. It stars Salma, an artist who falls into dreams while searching for ideas. The goal of the game is to explore the dream world and collect effects.
Somnium Angelus
Somnium Angelus is a Yume Nikki fangame created for Dream Diary Jam 2022 by SisterSoft. Enter the dreams of 3 girls to find them and bring them to their home on the moon...
Gen.loss
A Yume Nikki fangame made for Dream Diary Jam 8. Control Yamitsuki as she wanders a melancholy dreamscape. Learn more about her past and deep-set fears.
Food Diary
Food Diary is an English Yume Nikki fangame created for the 2017 Dream Diary Jam. You play as the famous restaurateur Guy Fieri and it plays like a traditional fangame, where you explore the dream world and collect effects.