Nintendo has announced that a special demo of Sonic Boom: Shattered Crystal is available now on the 3DS eShop.

The news came during today's Nintendo Direct broadcast, and it was also revealed that a special Sonic Boom 3DS theme will also be made available.

Launching alongside the Wii U version — entitled Sonic Boom: Rise of Lyric — Shattered Crystal is part of a cross-media push by Sega to reinvent the Sonic brand. It will be accompanied by a TV series and toy range, as well as other merchandise.