Restoration is an extended play by British progressive metal band Haken, that was released on 27 October 2014 through Inside Out Music. It is the first release of the band to feature bassist Conner Green and the second with producer and mixer Jens Bogren, who did his job at his Fascination Street Studios.

The EP was announced on 8 September 2014 via Haken's Facebook page. The EP's three tracks are reworked songs from their 2008 demo, Enter the 5th Dimension. Commenting on the option of reworking old tracks, guitarist Charlie Griffiths said:

Merely re-recording the demo songs would have felt musically redundant and dishonest, since three of us [keyboardist Diego Tejeida; Green and Griffiths himself] didn't play on the original recordings. The band's sound has evolved considerably in the last few years so we used the demo tracks as a starting point and gave ourselves free reign [sic] to reimagine them and make them relevant to who we are today. These are now the definitive versions and we couldn't be happier with how they turned out.

The ending song, "Crystallised"—which is based on the track "Snow", -- is 19 minutes long and features guest performances from guitarist Pete Rinaldi (Headspace) and drummer Mike Portnoy (The Winery Dogs, Flying Colors, ex-Adrenaline Mob, ex-Dream Theater). The band initially said Portnoy would not play the drums nor sing.

Commenting on Portnoy's guest performance, drummer Raymond Hearne said:

Mike Portnoy has been very generous with his support for the band since we released The Mountain last year. As if the man wasn't busy enough, we thought it would be nice to feature a little cameo performance from him (just for a bit of fun really) and it's flattering to now be at the stage where a musician of Mike's calibre is so willing to get involved with six guys who have always been great admirers of his music.

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Wikipedia