Sonic 1: Telephone Hack - Longplay/Walkthrough
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This seemed to be a hack made by some of the ssrg community members sometime a few years ago. This does have a dope level transition, I rate that for real! From what i've seen, it usually stops at "Volcanic Heat" zone act 1. But I chose to continue and see the rest, I like what was going on with the background & music replacements!