Back in 2008 I started a little playlist on YouTube of .midi versions of video game tracks.
Around 2010 I got a copy of Mixcraft and started making my own mixes for video game tracks.
Recently in 2012 I started VGM, or VG Music. I compose metal, and orchestrated version of popular, and maybe not so popular video game tracks!
If you want to check it out, you can view the playlist here: