Misterbull has sent us another engine demo for the game Spike's Quest. Seth said he tested it and it works fine, so I'm going to forgo that step. So, if it's a virus, it's Seth's fault, not mine.
Misterbull would like to emphasize that this is not indicative of the final game, but is simply a test of the engine. He releases these tests about once every Wednesday. If you'd like to keep up with the development of the game, there's a thread on Ponychan here that you can bookmark for more information.
The actual game can be downloaded here.