Circuitdream.exe

Overview
Circuitdream.exe is an English Yume Nikki Fangame Alternate Universe crossover with the anime series [https://en.wikipedia.org/wiki/Yu-Gi-Oh!_5D's Yu-Gi-Oh! 5D's] created by Sango Tsubasa and developed by Felice.

Plot
You play as Antimony, and would supposedly explore the mind of Bruno, your younger brother in the hospital, using an application on the computer called circuitdream.exe to find out what happened to him. Unfortunately, development of the game ended before anything more than the character's room was created.