PetroDragonic Apocalypse

On March 4, 2023 the band debuted the song "Gila Monster" during their performance in Tilburg, Netherlands. Later that month, on March 12, 2023, they posted a video on their social media with the caption "New album locked and JOEDED," featuring a clip from what was presumed to be a new song.[6] On May 7, 2023, they announced the album and artwork, which was described by the band as "a vivid, fiery painting of a lizard-like monster in an industrial, apocalyptic landscape."[7] They called the music "heavy as fuck" and announced that pre-orders were starting on May 16.[8]

Alongside the pre-orders, on May 16, 2023, the band released the lead single "Gila Monster" with an accompanying music video[9] and announced that the release date for the album would be June 16, 2023.[1] Many critics noted the track was a return to the thrash metal of Infest the Rats' Nest, and despite that album being labeled as a "one-off experiment", the band "have heard the siren call of metal in the wind."[1]

On May 28, 2023, the band debuted the song "Converge" during the Boston Calling Music Festival. "Converge" was first released on the compilation Demos Vol. 3 + Vol. 4 under the title "Uncolonise".[10] "Converge," "Supercell," and "Witchcraft" were played live in full ahead of the album's release, and "Motor Spirit" was played partially ahead of the album's release. The second single, "Dragon," was released on June 6, 2023, alongside a music video directed by Jason Galea.[11]

On June 8, 2023, the band played the album in full as intermission music between their two sets at Red Rocks.

Many people have noted and even called it a follow up to the band's thrash metal album Infest the Rats' Nest. Stu Mackenzie has talked about this similarity, stating:

"When we made Rats' Nest, it felt experimental. Like, 'Here's this music that some of us grew up on but we'd never had the guts or confidence to really play before, so let's give it a go and see what happens.' And when we made that album, we were like, 'Fuck, why did it take us so long to do this?' It's just so much fun to play that music, and those songs work so well when we play them live. So we always had it in our minds to make another metal record."[12]

The recording was similarly done to the band's album, Ice, Death, Planets, Lungs, Mushrooms and Lava, where the band wrote a song a day with "no riffs, no tunes, no ideas, and started from scratch."[12] Mackenzie explained how the band would put the songs together using the jams, which were all recorded. He also stated that for the lyrics and concept:

"I'd sketched out the story the songs would tell, and I'd portioned it out into seven song titles, with a short paragraph of what would happen in the song. I guess we kind of made the record backwards."[12]

The lead single (and first track performed live) "Gila Monster" has been described by critics as having "four-plus minutes of thrash-infused riffage and gang vocals" with the guitar solo in the last minute described as having "bleak, impossibly heavy shredding."[3] The music video was directed by SPOD, who "wanted to shoot Lord of the Rings 4 but also make a video game, so I mixed both mediums and came up with this majestic journey for truth and power in a cursed world. I mixed 3D animation, modeling & live footage in a 3D video game program to create this marvelous voyage of man & beast. Friend or foe?"[12]

"Dragon" was released as the album's second single.[11] It has been described as balancing their affinity for metal with their "gonzo psych weirdness."[13] According to Galea:

"Over the last two months, I dusted off my music video computer to slay the 10-minute "Dragon." I wanted to explore a harsh, distorted visual palette using my live visual setup mixed with PS1 cutscene-inspired animation and studio footage I filmed of the band. The animation was created using Cinema 4D and processed through After Effects and a Tachyons circuit-bent video unit."[14]

The album also contains a 14-minute bonus track, "Dawn of Eternal Night," featuring Leah Senior, available exclusively on vinyl.[12] The style of Senior's calm narration over background sounds performed by the band is reminiscent of the interludes featured in the group's earlier album, Murder of the Universe.

Professional ratings

Aggregate scores
Source	Rating
Metacritic	76/100[15]
Review scores
Source	Rating
AllMusic	[16]
Classic Rock	[17]
Exclaim!	8/10[18]
Loud and Quiet	7/10[19]
Pitchfork	5.4/10[20]
Riff Magazine	8/10[21]
Sputnikmusic	[22]

According to the review aggregator Metacritic, PetroDragonic Apocalypse received "generally favorable reviews" based on a weighted average score of 76 out of 100 from 7 critic scores.[23] A four-out-of-five-star review in AllMusic commended the performances, compositions, and lyrical themes on the album, concluding: "The stricter members of the metal community might see King Gizzard as interlopers with no real metal cred, but after Rats Nest and now this thrillingly massive album, there's no reason the band shouldn't be considered one of the best practitioners of the genre around."[24]

Vinyl releases have tracks 1–2 on side A, 3–5 on side B, 6-7 on side C, and 8 on side D. All lyrics are written by Stu Mackenzie, Ambrose Kenny-Smith, Joey Walker, Cook Craig, and Lucas Harwood.

Musicians

• Stu Mackenzie – guitars, bass, vocals, synthesizer
• Ambrose Kenny-Smith – vocals, synthesizer
• Joey Walker – guitars, bass, vocals, synthesizer
• Michael Cavanagh – drums, percussion, vocals, electronic drum kit
• Cook Craig – bass, vocals, synthesizer
• Lucas Harwood – synthesizer

Additional musicians

• Leah Senior – spoken word on "Dawn of Eternal Night"

Technical

• Stu Mackenzie – production, recording engineer, mixing
• Joey Walker – recording engineer, mixing
• Jesse Williams – recording engineer
• Nico Wilson – recording engineer
• Joe Carra – mastering

Artwork

• Jason Galea – artwork, layout, photography