What's the Deal with That Creepy Sonic CD Secret? « Legends of Localization

A hidden mode in Sonic CD features a spooky message written in Japanese. What does it say?

Sonic CD Classic on the App Store

Sonic the Hedgehog CD/Hidden content - Sonic Retro

Why does everyone think that an unusual environment is a bad one? It's supposed to be mysterious and different because of the story. I'm getting tired of people trying to “fix” frontiers

10 Video Game Secrets YOU DIDN'T WANT TO KNOW – Page 4

What's the Deal with That Creepy Sonic CD Secret? « Legends of Localization

Gaming Detail: Sonic CD Has A Creepy Bonus Screen

What's the Deal with That Creepy Sonic CD Secret? « Legends of Localization

Sonic Frontiers (Video Game) - TV Tropes

Sonic Movie Sequel Scheduled To Start Production In March Next Year

Sonic the Hedgehog CD (Video Game) - TV Tropes

Sonic the Hedgehog CD/Hidden content - Sonic Retro

Sonic the Hedgehog (Series) « Legends of Localization

Dr. Robotnik – Wizard Dojo

Behold! My Deltarune Demo Iceberg (feel free to leave suggestions to improve it) : r/Deltarune