Miserere

Overview
Miserere (Latin for Have mercy) is a unique sci-fi Yume Nikki fangame by Owl. The game stars an unnamed protagonist who has lived in solitude for twelve years on Harmony, a space station travelling to the center of the universe. Originally thrilled by the prospect of such adventure, the protagonist has now grown weary of their isolation and finds solace only in the exploration of their lucid dreams. However, by the start of the game their mental state is declining, and with it, the stability of the dream world.

Gameplay
What sets this game apart from the original Yume Nikki and many of its fangames is the lack of effects, as the author's main intention is to stress the importance of exploration as the primary mode of gameplay, rather than the hide-and-seek approach other games may have taken. The exploration worlds as of the current version are fairly linear.

Another difference between Miserere and the original Yume Nikki is in aesthetic -- the former features a much more realistic art style and music with more character than the traditional atmospheric ambience.

Plot
At the time of the game's opening, the protagonist seems to take a resigned perspective on life - their main pastime, aside from monitoring the controls of the planet-like station, is sleeping, perhaps evidence of an attempt to fulfill their basic human need of social contact, even through an artificial method.

The main character resides in a plant-infested space station. Their bedroom is an annex to what appears to be a main office containing piles of books, a few tables, and an exit to the outside area, where the player can see what was once the protagonist's attempt at a garden, which has now become overgrown.

The bedroom itself contains, besides the bed, a shaggy abstract rug, a single lamp, and some plants. Next to the bed appears to be a helmet.