Sonic made Cameo Appearances in several Anime.

https://youtu.be/AqMjfjySzys

Why Super Sonic can't use insta-shield in Sonic 3 https://www.youtube.com/watch?v=ywsg2fyhQnM

Fun & Insightful Tweets from Naoto Ohshima, Sonic's creator. https://youtu.be/fpfrfcIqx1A

What if Sonic.exe was Sega official:

Did Sonic Colors use the Hedgehog Engine?

https://youtu.be/m9L_hUkF1e4

Tangle and Whisper finally have voices

and they are PERFECT

#SonicTheHedgehog

A bit on Sonic Rush's Development https://youtu.be/xVS3g3JjJeQ

I may have gone too far in this one... https://www.youtube.com/watch?v=S3aPiTEMxOA

Wax Heads is a cozy-punk narrative sim about working in a struggling record store.

Lose yourself in an emotional, uplifting narrative about community, musical mysteries and underdog spirit. 

Play the Next Fest demo: https://bit.ly/WaxHeads

High Level Overview of Classic Sonic Physics https://www.youtube.com/watch?v=SUmqMixephg