Yume Nikki: Solitude is an English Yume Nikki fangame produced by Uboachan. You play as Kazenori in what seems like a hospital. When he falls asleep, you are taken to his dream world. All of the effects are available for you to use and there are only a handful of rooms to explore.
Yume Iro is a Japanese Yume Nikki fangame, inspired by two games at once - Yume Nikki, and a derived, but unrelated work, Witoru. Just like the original Witoru and its few fangames, this work's design is minimalistic and also contains various parodies and references to Japanese pop culture.
In this game, the player takes the role of a girl named Otetsuki who cannot leave her room. As with most traditional Yume Nikki fangames, the player's objective is to collect effects and explore the dream worlds.
Yasumeru is a Yume Nikki fangame. This game stars Yasashi, a boy living in a small house on a hill. The goal is to explore and collect effects. After waking up, you can see the time of day changes every time you sleep. It cycles from morning, to afternoon, to night, to dusk, then back to morning. There is also a small chance of rain when you wake up.
Void is a Chinese Yume Nikki fangame. You play as yukiko, a girl who can't/doesn't leave her bedroom. The objective is to explore the dream world and collect effects.
Usagi is an English Yume Nikki fangame. In this game, the player takes control over a girl named Umiko as she explores her dreams. Once in the dream world, Umiko can visit numerous surreal worlds, find effects that change her appearance (and give her new abilities) and collect Mementos, which are needed in order to complete the game. While exploring the dream world, the player is encouraged to interpret the different events, locations and NPCs he/she encounters to uncover Umikos backstory.
Uotamuosu is a Yume Nikki fangame. It stars three protagonists: Shiwasu, Bill and Takatsuki. Each one of them has his own locations and stories. You have to go through Shiwasu's scenario first, then Bill's and finally, Takatsuki's.
Unknown Exist is a traditional Japanese Yume Nikki fangame. It stars a girl named Kaede, who refuses to leave her room. The objective is exploration and collecting effects in order to achieve an ending.
Soul Song is a Chinese Yume Nikki fangame. The game plays much like other fangames, with the player's objective being to explore Mukuro's dream world via sleeping in the bed.
Sity is a Japanese Yume Nikki fangame. The game stars Mutsuki, a boy who cannot leave his room. The goal is to collect 16 effects in the dream world to unlock the various endings. This game has many elements related to modern cities and earthquakes.
Our good man, Reshnha, has been trapped in a world of dreams via an unknown force, and now he must escape by finding all the songs, strewn across a land composed of a pastiche of his own thoughts, memories and actions.
Sister's Dream, also known by its original name Art de Reve, is an English Yume Nikki fangame where you explore the deep dreams of a girl named Guretsuki.
Guretsuki is a typical 19 year-old hikikomori girl who doesn't want to leave her room. Throughout the dream world are various effects that'll allow you to trigger certain events, or make exploring your dreams a lot easier. Be careful while exploring, however, for the deeper you go, the darker your dreams get...
Sewage is a Chinese Yume Nikki fangame. You play a girl named Xuán Wō Zǐ. Like other fangames, the objective of the game is to explore the dream world and collect Items. Goods don't change the protagonist's form or do anything at all. Rather, they seem to be memories from the protagonist's past.
Rucidia's Dream is an English Yume Nikki fangame. You explore the dreams of the protagonist, Rucidia. The goal is to explore and collect all of the effects to access the ending.
Reverse Dream is a Japanese Yume Nikki fangame. The main goal of the game is to explore Guratsuki's dream worlds and collect effects (called Images (イメージ) in this game). Interestingly, each effect is based on a certain way of dying, with each effect having 死 (lit. Death) in its name.
Repentance is an English Yume Nikki fangame. You play as a girl named Latanie who refuses to leave her room, so she explores her own dreams instead. Like most fangames, the main objective is to explore the protagonist's dream world and collect effects.