Periphery III: Select Difficulty is the fifth album by the progressive metal band Periphery, released July 22, 2016. The opening track, "The Price Is Wrong", was nominated for Best Metal Performance in the 59th Annual Grammy Awards.It is the last album the band released on Sumerian Records. It is also the last album to feature bassist Adam "Nolly" Getgood as an official member of Periphery before he left the band in 2017, though he still returned on Periphery IV: Hail Stan to produce, engineer, and mix the album, in addition to contributing final bass parts.
Writing for Exclaim!, Calum Slingerland praised the band's "drive to keep exploring out of their stylistic box". In a review for "Prog Sphere", Stefan Andonov states that: “Select Difficulty is by far their most diverse album, they have grown and have found a way to combine complex sounding vibe with the popular one.”