Archie Sonic the Hedgehog Issue 79 was the seventy-ninth issue of the main Sonic the Hedgehog comic series.
- "The Discovery - A Sonic Adventure Tie-In"
- "The Chaos Factor"
- "Tales of the Great War: Life Under-Ground" - Part Seven
- Amy uses the Ring of Acorns to become older
- Dr. Eggman cracks the Black Emerald, releasing Chaos
- Dr. Eggman attacks the Chaos Chamber and shatters the Master Emerald
- Mammoth Mogul is freed by the breaking of the Master Emerald
- The Floating Island lands in the ocean
- In a flashback, Jules Hedgehog, while under the original Robotnik's control, throws his wife Bernadette into the roboticizer, where she is roboticized
- This was the fourth and final issue to feature Mobian background characters that were parodies of the girls of the Tenchi Muyo! Ryo-Ohki OVA anime.
- This issue begins the tie-in of Sonic Adventure.
- At the beginning of Knuckles's story in the issue, Knuckles uses the same narration, word for word, as he used in the intro to his story in the game, Sonic Adventure.