I just finished watching the Sonic OVA. After seeing the obvious reference to Sonic CD with the whole Metal Sonic deal, I also noticed two other references that are from Sonic 2 -- One I'm sure of, and the other I was led to notice by the former. Anyway, here's what I've got. http://img.photobucket.com/albums/v198/sup...ow342/snail.png This is the first, and most convincing snapshot of my claim. Notice anything about that Snail? It's the prototype Snail from the concept art at Sonic database! This is more than a coincidence, as from what I can see the designs are exactly alike. http://img.photobucket.com/albums/v198/sup...adow342/ccz.png The second, and more recently interesting is this area in the movie, dubbed "Robotropolis." This oddly reminded me of Cyber City zone, from the concept art that ICEknight posted earlier. That, combined with the Snail, led me to notice this particular reference. What are your thoughts?