Sonic Mania Adventures (2018)

Sonic Mania Adventures is a 2D cartoon animated series released for free on YouTube over the course of 2018, The series serves as a continuation of Sonic Mania, After the ending of Sonic Forces, Sonic is back to his dimension and then he discovers that Dr. Eggman is collecting the Chaos Emeralds and already has four of them, Now Sonic must gather all the Chaos Emeralds before Eggman and save Green Hill Zone once again.