Decomp: https://github.com/Rubberduckycooly/Sonic-CD-11-Decompilation
Mods used:
Sonic CD Separated Past Themes - SoN1c2001, US Past Themes by KingMeteorStudios
Higher Quality JP/US Music Mod - Darkskull Dawn Zenith
Restart Special Stages/Time Attack - MegAmi
1996 PC Title Screen - RetroForever
Sonic CD's version of Labyrinth is thankfully 100x easier. There's a distinct above and below water section in each zone, and it's very easy to find ways out of the water. Because of the Sega CD's limitations with music loading, the drowning theme isn't in this game.
Zone 1 has this really neat volcano background right at the beginning that never shows up again. It's never been stated, but I'm pretty sure it's lifted from R2. Why else would there be random volcanoes in a water level for two seconds?
At this time, SuperFreaksDev has 531 views for Sonic CD spread across 43 videos. The game makes up 1 hour of published video on his channel, roughly 2.40% of Sonic CD content that SuperFreaksDev has uploaded to YouTube.