| RELEASE DATE | ARTIST NAME | ALBUM TITLE | GENRE | REVIEW LINK |
| September 1, 2021 | Thumos | Nothing Further Beyond EP | Progressive Metal, Doom | |
| September 2, 2021 | MDS | Genesis | Progressive Metal | |
| September 3, 2021 | Weapons of God | The War Within Us | Progressive Metal, Power Metal | |
| September 3, 2021 | Sanity Theorist | Lost in a Kaleidoscope EP | Avant-garde/Progressive Death Metal | |
| September 3, 2021 | The Lion’s Daughter | Turbo Covers EP | Progressive/Blackened Sludge Metal | |
| September 5, 2021 | Avgmentor | Avgmentor | Progressive Metal | |
| September 7, 2021 | MDS | Piano Impro 19 | Progressive Metal | |
| September 7, 2021 | Terasophe | When It All Comes Crashing Down | Avant-garde/Experimental, Progressive Metal | |
| September 9, 2021 | Sweeping Death | Tristesse EP | Progressive Metal | |
| September 10, 2021 | Aeons | Consequences | Progressive Metal | |
| September 10, 2021 | Existem | Searching for Clarity EP | Progressive Metal | |
| September 10, 2021 | Hunted | Deliver Us | Progressive Metal, Power Metal | |
| September 10, 2021 | Jędrzej Panek | Seven Deadly Sins | Progressive Metal | |
| September 10, 2021 | MDS | Undermare | Progressive Metal | |
| September 12, 2021 | MDS | Gear | Progressive Metal | |
| September 14, 2021 | MDS | Piano Impro 20 | Progressive Metal | |
| September 15, 2021 | Lethargus | Eclectia | Power Metal, Progressive Metal | |
| September 16, 2021 | JobMatthijs | 11 | Progressive Metal | |
| September 17, 2021 | Dream Theater | Lost Not Forgotten Archives: Master of Puppets – Live in Barcelona, 2002 | Progressive Metal | |
| September 17, 2021 | Fierce Atmospheres | The Speed of Dreams | Progressive Metal | |
| September 17, 2021 | Валтасар | Еретик | Progressive Metal, Power Metal | |
| September 17, 2021 | Elias Viljanen | The Evillusionist | Progressive Metal | |
| September 17, 2021 | Melancholy | Waiting for Darkness | Doom, Progressive Metal | |
| September 18, 2021 | Prophets of Conviction | The Infinite Confusion of Jessica Stern | Progressive Metal | |
| September 19, 2021 | MDS | Asylum | Progressive Metal | |
| September 21, 2021 | Forever Stuck on This Nightmare They Called Planet Earth | Enter the Darkness EP | Avant-Garde/Experimental, Progressive Metal | |
| September 21, 2021 | MDS | Piano Impro 21 | Progressive Metal | |
| September 22, 2021 | Arthur Falcone’ Stargazer | Straight to the Stars | Progressive Metal | |
| September 22, 2021 | Ofèlia | Abismo sin fin | Progressive Metal | |
| September 24, 2021 | Aeon Zen | Transversal | Progressive Metal | |
| September 24, 2021 | Headless | Square One | Progressive Metal | |
| September 24, 2021 | Hell and Back | A Thousand Years | Heavy/Power/Progressive Metal | |
| September 26, 2021 | Tobias Whelan | Caracalistic Aura EP | Progressive Metal | |
| September 27, 2021 | Anu Eridu | Empire | Progressive Metal | |
| September 27, 2021 | MDS | Piano Impro 22 | Progressive/Heavy Metal/Rock | |
