Fountain Of Blood
I wanted to create a eerie story sense that would partially describe what happened in the horror game I was working on. It would describe what happened to the patients or what not to the psych ward. For instance, in game it would be just fine - but then when 3 am hits then the camera shows blood flowing out and filling the tank. UDK really didn't acheive what I wanted it to look like. This is when I decided to build my own game engine.