by New Sonic Speed Simulator update!
Actually its the Update 4. Today started a new event at Sonic Speed Simulator to save Amy Rose from the Dr. Eggman cristal prision.
Collecting pink cristals you can unlock rewards traveling through the levels, even you can unlock Amy Rose as playable character. The event ends in 1 week.
Source: Sonic Overtime.
Here some Amy Rose gameplay from Sonic Overtime channel.
What are you waiting for? After Sailor Tails, Knuckles and Hill Top new zone, what character do you expect to see ingame? Lets us know at comments or participate at Sonic Metropolis discord server.
Source: Sonic Speed Simulator