It’s hard to say right now how well Sonic Mania will do in terms of sales for game consoles such as the Nintendo Switch or the PlayStation 4.  Back when Sonic the Hedgehog was released for the 16 bit Sega Genesis consoles in the early 90’s the series ended up becoming one of the regards to platform games during the 90’s.  However, the landscape of gaming has changed dramatically since then.  
The idea of using 16 bit like graphics for the Sonic Mania is something that would definitely appeal to retro gamers along with modern day gamers who missed out on how exciting 2D platform titles were back then.  In terms of popularity the Sonic the Hedgehog series has never been quite the the same as it was back in the 90’s.  However, Sonic Mania can play a significant role in revitalizing the series overall since some of the 2D titles are considered to be more popular then some of the more recent 3D games in the series.