Ugh stupid computer being in the shop for longer then expected, doing this on the Wii U is a pain... uggggh.
Anyway for my return!
#13 hint: Originally released in two seperate releases, the second release could link to the first, providing a more coherent story and slight level layout changes in both. By far and away the longest 2D title in the series and widely regarded as one of the best, with 3 playable characters and 14 ZONES.
#12 hint: The 2nd generation of a highly regarded very popular franchise, was a direct sequel to the first and was the only one to allow the exploration of multiple regions. Painfully obvious.