Sulphuric Deity - Demonstration MMXXVI

Labels: Self-Released/Iconoclasm Conquest

Formats: Tape/Digital

Release Date: 06 Feb 2026

Tracklist:

1. Introduction

2. Gas Guts

3. Mutant Plague Assault (The Plague Becomes The Sword)

4. Foetus Christ

5. Subterranean Eradication

These are bleak times. Grey Britain is definitely living up to its name. From an island nation that gave birth to Black Sabbath's doom and the driving tempos of Motörhead, the bedrock for extreme metal was laid (at least in the UK). War metal, which shares its roots with black and death metal, has branches that stretch from South America to India and across every other country/continent if you look hard enough.

A new band emerged last year going by the name Sulphuric Deity and quickly released their first demo in February. Needless to say it sold out quickly, leading to a repress via German label Iconoclasm Conquest. My review this evening is of the digital version that contains five songs, while the tape version includes an additional exclusive cover of Blasphemy's 'War Command'.

Starting with ‘Introduction’, which was a collaboration between Sulphuric Deity and Mike Blenkarn-Durning, the sound of distorted air raid sirens, gales and disconcerting explosions provide the perfect backdrop to Sulphuric Deity’s intense barbarity. ‘Gas Guts’ unleashes hellishly loud, feedback-laden instrumentation as well as high/low-pitched vocals. It’s an instant impact that you never recover from.

‘Mutant Plague Assault (The Plague Becomes The Sword)’ takes the band’s grind influence and dials it up as high as it’ll go. There’s a metallic edge but not one that’s too obvious, as the recording and the rest of the instrumentation drags it back into darker territory. Demos can sometimes be overlooked but not by fans of extreme music and this one demonstrates why (sorry).

Sulphuric Deity’s sound leaps forward throughout this release and nowhere is that more obvious than on ‘Foetus Christ’, where bestial back metal is joined by death metal groove and screeching solos, causing a rousing opening salvo that leads to more crazed musicianship. Closing with ‘Subterranean Eradication’, there’s something immediately satisfying about the power of the instrumentation. Slightly powerviolence-esque, it continues on alongside scathing vocals that harness the true hatred that exists within black metal.

This is a powerful demo. One that justifies constant rotation alongside its recent tape repress. I’ve witnessed a lot of bands go silent after one or two releases. Hopefully, it isn’t the case with Sulphuric Deity.  

Demonstration MMXXVI is available to stream and purchase digitally from Sulphuric Deity below:-

Limited 2nd press tape copies are available from Iconoclasm Conquest here:-

https://iconoclasmconquest.com/products/sulphuric-deity-demonstration-mmxxvi-mc

Sulphuric Deity - https://www.facebook.com/profile.php?id=61586266141454

Iconoclasm Conquest - https://www.facebook.com/iconoclasmxconquest