Yume Nikki (ゆめにっき, lit. Dream Diary) is a surrealistic adventure game by indie Japanese developer Kikiyama. The game was created using RPG Maker 2003, but has few role-playing game (RPG) elements. Players explore the dreams of a hikikomori character named Madotsuki (窓付き, lit. windowed). The initial version of the game was released on June 26, 2004, with subsequent updates over time, the last occurring in 2007.

This run by poco_cpp extensively utilizes a glitch involving a desk chair to allow Madotsuki to move at 8 times her normal speed, allowing the 24 effects to be collected in record time.

There is also an alternate YouTube stream featuring Japanese commentary by the author.

Caution: Some sequences in this game may be disturbing and triggering to some people. Viewer discretion is highly advised.