Warning was Green Day's sixth studio album and the first the band produced themselves, with regular producer Rob Cavallo moving up to executive producer. Acoustic guitars, harmonica and a melodic, almost folk-leaning approach took the place of the fast power chords of Insomniac and Nimrod. "Minority", "Macy's Day Parade" and the title track became its best-known songs. Originally released in 2000, it reached number four on the Billboard 200 and sold less than its predecessors. Twenty years on, Louder looked back on it as an "overlooked folk-punk classic".

This edition is a 5-LP anniversary box set on green, yellow and orange galaxy vinyl, with demos, b-sides and a full live show from Tokyo.