Sonic CD Online – Description (Original Text):

Experience the high-speed, time-twisting action of Sonic CD right in your browser! Join Sonic the Hedgehog as he races across the mysterious Little Planet, a world where past, present, and future collide. Dr. Eggman has chained the planet to a mountain and is using its strange time powers to build his ultimate empire — unless Sonic can stop him first!

Dash through stunning pixel-perfect zones, collect rings, smash robots, and use the power of time travel to restore peace to every era. Every stage offers multiple paths and timelines to explore — travel to the Past to fix Eggman’s machines, survive the Present, or race into the Future to see what your choices have changed.

Featuring smooth online play, updated visuals, and all the speed you can handle, Sonic CD Online brings one of Sonic’s most beloved adventures to modern players. Race against the clock, challenge Metal Sonic, and create a good future for Little Planet — anywhere, anytime!