On September 10, 2019, the band announced the Hella Mega Tour with Green Day and Weezer as headliners along themselves, with The Interrupters as an opening act.
In 2019, the band was sued by Furry Puppet Studio for overusing llama puppets made by the company.
On December 7, 2018, Fall Out Boy received their second Grammy nomination for Best Rock Album for Mania .
In September 2018, Fall Out Boy headlined Wrigley Field in the band’s hometown of Chicago, marking a milestone in their career as their first headline show at a stadium.
On August 23, 2018, the band released an EP called Lake Effect Kid .
On February 23, 2018, the band released an EP called Llamania .
Mania was officially released January 19, 2018 and debuted at number one on the Billboard 200 , making it the band’s third consecutive and fourth chart-topping debut overall.
and performed in Australia in 2018 with indie band WAAX.
” Hold Me Tight or Don’t ” was then released as the fourth single on November 15, with the music video being released alongside.
The band announced the album’s completion on November 6, 2017, along with the final track list.