Mad Gear Zone Act 1 - Dr. Eggman's Secret Base Sonic The Hedgehog 4 Episode 1dailyvideos (52)in #sonic • 7 years ago #SonicTheHedgehogFourEpisode1 #Part1 #Act1 #MadGearZone #DrEggmansSecretBase #SecretBase #Sega #PCGaming #2Dsidescrolling #platformer #SonicTheHedgehog #DrEggman #firstact #HowToBeat #HowToWin #StrategyGuide #MadGearZone #MadGear #ActOneDrEggmansSecretBase #DrEggmansSecretBase #sega #gameplay #letsplay #playthrough