Direct Link: http://www.youtube.com/watch?v=1OP_VTFq_P0
Same deal for this second video. Website listed for the video is www.crusadercast.com. Again, not sure if it's an actual playable video game or if it fall under "fan art." Whatever it is, it is pretty damn awesome! Sorry, blogger can't seem to find the video on the search, but below is the direct link to the video.
Direct Link: http://www.youtube.com/watch?v=-f37YXEGbnA