Sonic The Hedgehog Open Source Project - Walkthrough

Sonic The Hedgehog Open Source Project (STHOSP) is a ROM hack of Sonic 1 for Sega Mega Drive with open source code that OuricoDoido has done, the hack has several new features in relation the original game: - Now each level has four acts - Each levels have new design - You can play with the Sonic or with the Tails, each with their own skills - The transformations of Super and Hyper is accessible for both characters - Monitors ’S’ and monitors Eggman reprogrammed, now monitors Eggman