Sonic Celebrates Birthday With Sonic Generations Demo - Siliconera

Sonic turns 20 years old on June 23 and Sega is handing out a Sonic Generations demo as a party favor. Download it and you can play Green Hill Zone Act 1 with Classic Sonic.

Wii – GamerSushi

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References to Sonic in video games - Sonic Retro

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Steam Community :: Screenshot :: Happy birthday Sonic~

Sonic Generations Part 1: Happy Birthday Sonic!

Sonic Generations Demo - Colaboratory

Sonic Generations Cake Project- Green Hill Zone by iluvcookiess on