Sonic Frost is one of my old sonic fangames from 2016-2018.
It is supposed to take place after Sonic 2 and before Sonic 3. The story is that after the events of Sonic 2's good ending, Sonic and Tails decide to relax but it turns out they get a letter from Dr. Robotnik inviting them to Northern Island, and when they arrive, they see the place has been turned into a Winter wonderland! It's up to Sonic and Tails to take down Eggman and restore the Island to it's original state.
Stages:
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Snowy Hills: It previously was a peaceful Green Hill-like area that many critters enjoyed. But the Blizzard Sapphire changed it to a Snowy Place.
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Arctic Ruins: Looks like some sort of Temple that has frozen over. It seems to be very similar to Marble Zone, but with Labyrinth Zone elements in it. Sonic and Tails won't know what'll happen next, that's for sure.
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Foliage Airway: After beating the Arctic Ruins boss, the ice breaks and you get launched straight up in the air when you land in Foliage Airway Zone. It's a floating archipelago with multiple tiny islands which are stuck together via vines. A rainbow is visible in the background.
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Frozen Meadows: Sonic & Tails fall out of the clouded utopia and back near the ground but Tails saves Sonic’s life by picking him up and putting him to safety. After that, they notice that they are high up in the sky, but the zone gives them a sense of déjà vu...
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