In what year was the album “眠り姫” released by SEKAI NO OWARI?

In what year was the album “眠り姫” released by SEKAI NO OWARI?: The album “眠り姫” was released in 2012 by SEKAI NO OWARI, featuring 3 tracks.
What is the most successful song from the album “眠り姫” by SEKAI NO OWARI?: “生物学的幻想曲” is the biggest hit from the album “眠り姫” by SEKAI NO OWARI.

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