Hey,
Has anyone here besides me played Sonic 2 Long Version or Sonic 2 & Knuckles Long Version on Genesis Plus? They're hacks of Sonic 2 with a few additional zones added that were in the beta version.
Anyway, for the most part, the two hacks play pretty well up to Genocide City Zone (in Sonic 2 Long Version, when you get to this zone, regardless of whether Level Select is used or not, the title card stays on the screen and makes this zone virtually unplayable. In Sonic 2 & Knuckles Long Version, the zone is playable, but there are a bunch of things that get all glitched up, excluding Knuckles). When I play these two hacks on my computer, they don't have the problems I mentioned above, so why would they be happening in Genesis Plus? I suppose the problems might not happen if PicoDrive could be ported to RetroArch on the Wii U, though.