This is not the first time SEGA has attempted to make an RPG in the Sonic the Hedgehog
series. In early 1993, SEGA was involved with Falcom in the development of a Sonic role playing game for the SEGA CD titled Sister Sonic
. Just as Super Mario Bros. 2
was Doki Doki Panic
with the Mario cast replacing the original characters, similarly, Sister Sonic
would have been Popful Mail
with the Sonic cast replacing the original characters. The game, which would have given Sonic a long lost sister, was cancelled due to fanmail sent to the company.