Tails Is Playable In Sonic CD Port

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Sonic CD – the 2011 version – for PlayStation Network, Xbox Live Arcade, iOS, Android, Windows Phone, and PCs makes Sonic the Hedgehog’s sidekick is a playable character. Players can unlock Tails after completing the game. From the screenshots, it looks like Tails can fly too, which should make exploring levels easier.

Source : http://www.siliconera.com/2011/11/01/tails-is-playable-in-sonic-cd-port/