Sonic the Hedgehog 2 (pre-beta)/Comparisons/Neo Green Hill Zone - Sonic Retro

Bosses - Sonic Mania Guide - IGN

Zone: 0 > Sonic 1 > Green Hill Zone

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Green Hill Zone – Wikipédia, a enciclopédia livre

Green Hill (Sonic Adventure 2), Sonic Wiki Zone

Sonic Mania's Green Hill Zone level is a hi-def remix of the original - The Verge

The Spriters Resource - Full Sheet View - Sonic the Hedgehog (Prototype) - Green Hill Zone Act. 2

Emerald Hill Zone, Sonic Wiki Zone

Sonic The Hedgehog Green Hill Zone 2.5 Inch Figure Playset

Sonic Mania Green Hill Zone Act 2 Revealed - VGU