Late 90's, before good internet, I made maps of Sonic 1 to efficiently get all the Chaos Emeralds... like a nerd : r/SonicTheHedgehog
Sonic 3: How To Find All The Special Stage Rings
Sonic the Hedgehog 2: All 7 Special Stages (HD) - YouTube
Zone: 0 > Sonic 2 > Emerald Hill Zone
Red Mountain - Emerald Locations - Chao Island
Red Mountain - Emerald Locations - Chao Island
Chaos Emeralds - Sonic Retro
Lost World - Emerald Locations - Chao Island
Sonic Origins: A quick guide on how to collect ALL Chaos Emeralds in Sonic 2 - YouTube
Sonic Mania: 7 Chaos Emerald Locations | Super Sonic Guide - Gameranx
Sonic the Hedgehog 2 (16-bit)/Hidden content - Sonic Retro
Red Mountain - Emerald Locations - Chao Island
Master Emerald Shrine | Sonic the Hedgehog Cinematic Universe Wiki | Fandom
Chaos Emerald (Paramount) | Sonic Wiki Zone | Fandom
Guide for Sonic The Hedgehog 2 - Playthrough 1: Chaos Emeralds
Special Stage (Sonic the Hedgehog 2) | Sonic Wiki Zone | Fandom
Sonic The Hedgehog 2 (8-bit) - Game Gear - All Chaos Emerald Locations, Hidden Zone and Good Ending! - YouTube
Zone: 0 > Sonic 2 > Emerald Hill Zone
Emerald Hill Zone | Sonic Wiki Zone | Fandom
Chaos Emerald Guide - How to Find Every Chaos Emerald - Sonic Frontiers Guide - IGN
Kronos Island Chaos Emeralds - Sonic Frontiers Guide - IGN
