In this first installment of Sonic Oddbytes, where I explore unused sprites and odd details from classic Sonic games, we’re taking a look at a unused visual effect in Sonic 1. It closely resembles the time-warp effect seen in Sonic CD, but for whatever reason, it was left unused in the final release of Sonic 1.
Source :
The Cutting Room Floor
https://tcrf.net/Sonic_the_Hedgehog_(...
Sonic Database
http://www.sonicdatabase.com/Mods/mod...
Sprites Ripped/Edited by :
Cioss