Thirty seven playable songs in total</br>Region free?? works on all PSVita systems</br>Language and manuals remain in Japanese</br>Single player rhythm game</br>Ten vocaloids included?? 6 unlocked?? 4 unlockable</br></br>Product Description</br></br>for SONY PS Vita ONLY WORK</br><br/>http://www.amazon.com/gp/product/B007XMUJL8