Why do you need Capcom when you can do it on your own. That was probably what the fan was thinking when he decided to work on the Resident Evil CODE: Madman or Resident Evil 3.5 Recreation Demo.
The project is based on the scrapped beta version of Resident Evil 4. Created by ShiguWorks, he announces that the game is now available to play. He also added that the demo is an accurate recreation of Castle, Hallucination, and zombie.
These builds were thrown out the window that Hiroshi Shibata passed the game over to Shinji Mikami. Since the game was not completed, ShiguWorks had to use his imagination and bits and pieces from the other Resident Evil game to complete his demo.
We do not know how long this game will last before Capcom steps in to take it down. They have done it in the past and they could still do it now. Maybe Capcom is not aware of it yet but if you would like to try it out, you can download it here.