Sonic was just an average fifteen year old dealing with school, bullies, homework, and the subject of his own death. No big deal. /A serious look at the high school AU/

In a world conquered by Robotnik, living is a rebellion in and of itself. Marked for death after the slaughter of their village, Sonic and Tails struggle to survive on the streets of Robotropolis. The resistance offers sanctuary and retribution, but only if they can find them and stay alive in the meantime. One day, one step, one breath at a time. /Alternate Underground Origin/

It's 1992 — Mobius is obsessed with the blue enigma who saved South Island a year ago, and Miles Prower is no exception. Meanwhile, Sonic is tired of the whole thing and sets off looking for a change. Driven by mutual curiosity, the two meet… Even between brothers, there's always more to the story. Based on Sonic the Hedgehog 2 (8-bit version). /Rating changed to T for action./

AU of the SegaSonic universe. When Sonic finds a seemingly abandoned fox cub on the streets of Station Square, he suddenly becomes the target of an evil organization bent on world domination and its deadly enforcer, Shadow.

It's still beating, isn't it?" After a second, Tails nodded, and Sonic lifted his hand again, placing it over his own heart. "And mines still beating. We're alive, Tails." He smiled. "And our hearts are beating to tell us that." SonicxTails bro oneshot