Classic Sonic: 1991 - 2017 : r/SonicTheHedgehog

Sonic the Hedgehog celebrates its 30th anniversary today

Classic Sonic: 1991 - 2017 : r/SonicTheHedgehog

Sonic the Hedgehog já roda nos nossos telemóveis

Sonic the Hedgehog (2013), Sonic Wiki Zone

Sonic the Hedgehog Pinball Machine, Pinball Hype Index

Sonic Mania: How Sega can fix it

The Classic Sonic The Hedgehog years from Sonic The Hedgehog (1991) to Sonic Mania (2017).

Sonic the Hedgehog at 30: How Sega conquered the video games industry – and then threw it all away

Classic Sonic (1991-2017) by MajoraArts on DeviantArt