Sonic 1 KawariNo is a ROM hack of the original Sonic the Hedgehog, where you will experience new visual effects, level alterations, and enhanced movement options. You guide Sonic through modified versions of iconic zones like Green Hill and Spring Yard with color changes, altered layouts, and speed adjustments that shift how each stage plays out. This version introduces subtle gameplay changes while preserving the physics of the 1991 classic, allowing you to experience the original structure with a fresh technical approach that affects pacing and visual clarity.
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