Bad Birds

Aether is a fangame of the classic indie hit, Yume Nikki. A prequel to Nihil, the game follows Hirumataiyo exploring her dreams. With her mindscape split in half, she must collect various Effects while her Shadow watches from deep within her subconscious.

Dawn of Dreams is a 3D fangame of the classic indie hit, Yume Nikki. A woman by the name of Doakeru is our protagonist, a lone being living in the middle of a desert. Nevertheless, she manages to reach other people through her dreams, exploring theirs instead.

A Yume Nikki Fangame about a boy who hides something in his dream world.

Butterly Effect is a traditional Yume Nikki fangame. The goal is to collect all four effects scattered throughout the world. You play as Mari exploring areas which reflect memories.

Rem is a traditional Yume Nikki fangame created for the Dream Diary Jam 3. Explore the dreams of Juke as you find effects and events. In addition to effects, the player can also collect little orbs scattered around the various dream worlds and unlock wallpapers for the computer.

Nihil is a fangame of the classic indie hit, Yume Nikki. Following a girl named Yorutsuki escaping from reality through her dreams, you are tasked with collecting several "Effects" found in her dream world.

Yume Nikki 3d is a fan game based on Yume Nikki universe with surreal exploration.

An unreleased open world Crash Bandicoot game which would have introduced Crush Bandicoot as an evil twin to the titular character, and it was intended to feature zany, open-world sci-fi environments.

Unaccomplished is a Yume Nikki fangame. Yin Ming wakes up on his balcony in the midst of a thunderstorm. He is unable to leave his room due to it, so all he has left to do is sleep, and dream. The player explores the dream world and collects effects that change Yin Ming's form and grants him new abilities.

Nightmarescape is an English Yume Nikki fangame. You play as Akari and collect effects while exploring her dreams.