Thanks for giving my entry a try ^^
Yeah the genesis made quite an impact on me back in the day and i've always liked its sound, so i was happy to have found a soundfont that would help me make the most legit sounding tunes as possible :p
The thing is that the very back of the background layer is indeed fixed except for the cloud that constantly move (but a bit too slowly to be noticable maybe) but there is a layer of parallax in front of that, it's just that because of how i made the levels and tuned the parallax layer node it doesn't seem to be all that visible appart at certain heights in certain stages :(