So, this might become a series, I don't really know, but it's about Subject 187, a test subject in a simulation. In each part of the simulation, there's parts of the world called "Floors" and the subject is tested to see if he can complete each floor. At the end of the fourth floor, go into the blue area.
ID:skunk1016-floors
Demo: http://www.plazmaburst2.com/?s=2&map=skunk1016-floors
It's not long but not short.