The endless running game genre is one that I feel that Sega completely missed the ball on. Think about it, the whole point, at least according to the Sega marketing department back in the 16-Bit days, was speed.
Sega should have had a Sonic endless runner on mobile from the moment they heard about the genre. Completely missed opportunity here.
Sonic is MADE for this type of game and certainly fits the mold quite well. Too bad Sega waited so long to bring Sonic here.