Evolution of 2D Sonic Games: First Levels (1991-2021)

0:00 Intro0:09 Green Hill Zone (Sonic the Hedgehog) (1991)1:41 Emerald Hill Zone (Sonic the Hedgehog 2) (1992)3:58 Palmtree Panic (Sonic CD) (1993)6:15 Angel

Ashura: Dark Reign Windows game - ModDB

Evolution of Sonic The Hedgehog Games 1991 - 2022 (ソニック・ザ・ヘッジホッグ

Sonic's Famous 'Health' System, The Rings – Parry Everything

Evolution of Start Screen in Sonic Games (1991-2020)

Sonic the Hedgehog Community - Fan art, videos, guides, polls and more - Game Jolt

User blog:Starsprite53/StarSprite's Sonic The Hedgehog, VS Battles Wiki

CBeebies - Uncyclopedia

Sonic the Hedgehog (1991) – Game Art, Screenshots and some Text

Sonic the Hedgehog Community - Fan art, videos, guides, polls and more - Game Jolt

Sonic's Famous 'Health' System, The Rings – Parry Everything

Evolution of 2D Sonic Games: First Levels (1991-2021) - Sonic the Hedgehog video - Fanpop

Sonic the Hedgehog Evolution (1991 - 2023)

Evolution of Start-Screens in Sonic 2D Games

Evolution Of SONIC Intro Screen (1991-2021)

Evolution of 2D Sonic (1991-2023)