Sonic Generations mod adds most levels from console-exclusive Sonic Unleashed

Sonic Generations » SEGAbits - #1 Source for SEGA News

Franchise Festival #87: Sonic the Hedgehog (2008-2017) – The Avocado

Steam Community :: Guide :: How to Install Sonic Unleashed Mod?

Sonic Generations HUD [Sonic Unleashed (Wii)] [Mods]

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Steam Community :: Guide :: Mods for Sonic Generations (Better

Sonic Generations - PCGamingWiki PCGW - bugs, fixes, crashes, mods

Sonic Generations but with Better Sonic and Awesome Stages!

Some more screens image - Sonic Generations - Unleashed Project