Nyan Nikki

Overview
Nyan Nikki (also refered to as Nyan Nikki Sugar Diary) is an English Yume Nikki fangame created by an unknown developer. It is a fangame of both Yume Nikki and Nyan~ Neko Sugar Girls.

Very little information on this fangame exists, outside of a single Youtube video.

Gameplay
Nyan Nikki seems to play like a traditional fangame, with the player starting in a bedroom. The player can save from the menu. Interacting with the bed does nothing, and going outside leads to a eerie game over.

Plot
Very little is known of the game's plot. You play as Raku-chan, one of the characters from the series.

Trivia

 * The song playing during the game over is the popular Last Christmas, by the English duo Wham!, seemingly covered.