Ultra Violet is another Yume Nikki fan-game; produced by gozo-ropp
It revolves around a young girl known as Sometsuki who explores her dreams while sleeping, she also appears to be a sleep-walker.
It is currently at version 0.03 with a total of 13 effects and no ending as of yet.
Technical Problems
There is a known issue where downloading the game under the English locale will cause all of the files to be improperly named, resulting in the game being completely unplayable. To mitigate this issue, potential players must first set their locale to japanese (not through applocale, but through the Windows Control Panel) and then download and run the game.