It's definitely fake. No normal human being can possibly make something that accurate out of LEGO and perfectly synced it with the sound. It's not hard to fake this stuff, just have a slab of white lego and superimpose a semi-transparent game footage video over it.
Super Smash Bros. Brawl
06/07/2008 / "Populating Tag Error" upon visiting Page 2 of Robtot's Comics :/