Solitude's title screen
Solitude is a Yume Nikki fangame planned to be produced by Uboachan. It was cancelled after the first release.
You play as Kazenori in what seems like a hospital. When he falls asleep, you are taken to his dream world. All of the effects are available for you to use and there are only a handful of rooms to explore.
Kazenori seems to be trapped in the hospital, and his only method of escape is through his dreams. Apparently there were many ideas about the plot for this game, but due to its early cancellation, the actual plot is unknown.
All of the effects are already in your inventory to use when you enter the dream world, due to the "first release" being in more of a beta-testing stage.