Wow, so there are a couple of things that are awesome in this one. First of all, the idea of the original Mario Bros. in a FPS format is hilarious. Second, the creators matched the level 1-1 of the game and even included a little window of the original version to follow along with. Lastly, the video is available in 3D!
I happen to have an abundance of crappy Red/Cyan glasses for some reason, so this works out great. If you can dig up a pair for yourself, I recommend checking it out… Non 3D is below it: