New footage from Sonic The Hedgehog 4: Episode 1 has leaked onto YouTube, and you can check it out below.

The video shows Mad Gear Zone - Act 2 in full. The music itself rewards a play through.

It also shows off the rather splendid prospect of Super Sonic in its later stages.

Sega's 2D episodic title is due for release on PSN, WiiWare and XBLA this summer.

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