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psyder is a Japanese Yume Nikki fangame. It stars Kataochi. You can also play minigame called Sushi Survivor.
Overdrive is a Japanese Yume Nikki fangame. The player starts as a girl named 323, staying in a laboratory-ish room who doesn't want to go out of it. She can travel to a world called Outer World by entering the capsule machine in the room. Her purpose is to collect all Concepts in the Outer World. There is an unlockable character named 543, a boy that stays in a patient room and doesn't want to go out, after you find the way to meet him in Outer World.
Nameless is a Japanese Yume Nikki fangame. You play as and explore the dreams of Mukuchi.
Mortalis is a traditional Yume Nikki fangame. Shimotsuki refuses to leave her room, instead exploring a dream world seeking to collect effects. Additionally, there is a game console resembling a GameCube in the room that can be used to play a minigame called Tomato. Uniquely, music tracks are not given by merely entering areas. Instead, tracks are collected through finding floating orange music notes in dream world locations.
Made in Nightmare is a Japanese Yume Nikki fangame. The goal of the game is to explore Nemu's dream world and collect effects.
Book End is a Japanese Yume Nikki fangame. It stars Shiori, the main goal being to explore the dream world and collect Spells.
Yume Tsuduri is a Japanese Yume Nikki fangame where you play as and explore Eritsuki's dream world. The goal is to explore and find effects.
Shirube No Kazari is a traditional Yume Nikki fangame. You control Michito, who stays in an abandoned facility, keeping watch over a mysterious girl in a chamber. The game does not feature a traditional Nexus, but rather a linear starting area that branches out as the player explores further. There is also a health system wherein the player will be woken up if they're caught by chasers too many times.
Remegeton is a Yume Nikki fangame. It stars Harutsuki, a young girl who has locked herself in. Remegeton focuses on collecting effects and exploration, like most traditional Yume Nikki fangames.
Kataribesou: Ensouki is a game inspired by Yume Nikki, starring a featureless figure named Shidonoko, traveling into weird worlds from a building. The game contains RPG elements (combat, an item shop, etc.). It additionally lets one choose a difficulty level at the start of the game.