[3][4] In 2015, The Murlocs joined King Gizzard & the Lizard Wizard for all three stops of the inaugural Gizzfest festival tour.

[6] Young Blindness was followed in 2017 by The Murlocs' third album, Old Locomotive, which included the singles "Noble Soldier" and "Oblivion".

[10] In support of the album, the band began their first headlining tour of the United States in April 2019.

On 20 April 2021, they announced their fifth studio album Bittersweet Demons, due 25 June 2021, and released the first single "Francesca".

It's also the closest we’ve ever come to having an 80s phase.”[12] In a YouTube Q&A, the Kenny-Smith stated that Bittersweet Demons is "very personal to me as every song is based upon different places I grew up and certain family members and friends that are close".

On 12 July 2022, the band announced their sixth album, Rapscallion, which was released on 16 September of the same year.