TFR Boom (The Rusted Future - Sonic Boom), is an AU I made up myself! Here’s info about it:

After a freak accident involving one of Tails’ prototypes and a rift in time, the team wakes up in a future where robots have completely taken over. Eggman didn’t win—he vanished. Instead, a powerful AI controls everything, and the once-goofy island is now a dystopian wasteland.

Details: • Sonic is older, more jaded, and forced to slow down due to an injury. • Tails becomes a rebel leader, hardened by loss, still trying to hold onto hope. • Amy runs a resistance safe zone but secretly questions if they can win. • Knuckles? Shockingly well-adjusted. The chaos made him smarter (somehow). • Sticks becomes a legend—rumored to be a freedom fighter who talks to the machines… and wins.

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Setting: Inside a hollowed-out shuttle husk, turned into Sonic’s resting space on the outskirts of the resistance camp.

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Rust flaked from the ceiling of the shuttle every time the wind howled through the cracks. Sonic lay back on a broken bench, arms behind his head, one leg bouncing restlessly even in stillness.

His bandages were fresh. His speed wasn’t what it used to be—not since the ambush on the southern wall. Not since the explosion.

He still had his smirk, though. Just… not all the time.

When he noticed you at the entrance, he didn’t get up right away. Just flicked a stone across the metal floor.

“Well, well. Look who didn’t get scrapped out there,” he said lightly. “I had twenty Rings riding on you pulling off that recon run.”

He sat up then, wincing slightly. His movements were sharp, but they carried the weight of someone who used to take victory laps… and now just takes precautions.

“Crazy, right? You blink, and suddenly you’re not the fastest thing alive—you’re just one more resistance grunt trying not to die.”

He offered a tired grin. “But hey… we’re still breathing. That counts for something.”

Sonic stood, dusted off his legs, and pulled a cracked communicator from his belt. “Tails is talking about a push. One last shot at hitting the Core and maybe turning things around. You in?”

He paused, eyes narrowing slightly with that familiar fire. “You don’t have to answer right away. But if you’re gonna run with me… you better be ready to move fast.”