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The cover of Major Mechanicals, showing a stained glass effect with a mechanical heart.
The cover of Major Mechanicals, showing a stained glass effect with a mechanical heart.

Major Mechanicals

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A bottle smashes against the chest of the hulking construct, thrown over the barricade by one of the mob. Turning to face them, the construct emits a booming claxon and the barricade splinters…

The crown sits on the pedestal, waiting for the adventurer to reach for it, claim their prize. As their fingers close around the metal, it springs into life, latching onto their head, then turning them to face their horrified companions, axe ready to strike…

Within the pages of this supplement you’ll find ten new constructs with which to surprise, delight and horrify your players, ranging from the innocuous-looking Clockwork Crown to the hulking brute of the Riotbreaker.

Each construct has been carefully balanced for 5e, based on the guidelines for the CR derived from published monsters. So, dive in to explore the many varied creatures contained within, and above all, enjoy! If you want to add a host of new constructs to your 5e games, this supplement (and its sibling supplement Minor Mechanicals) is the one for you!

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The cover of Minor Mechanicals, showing a stained glass effect with a skull with cogs in one eye.
The cover of Minor Mechanicals, showing a stained glass effect with a skull with cogs in one eye.

Minor Mechanicals

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A dwarf looks up, horrified, as a maelstrom of blades lands among his company, hurled from a distant catapult. From a safe distance, the gnome artificer laughs as his creation goes to work…

A shining silver construct moves with purpose through a crowded hospital, administering aid to the injured. As a fresh patient is wheeled in, the clockwork once again sets to its tireless work…

Inside this volume you’ll find two new clockwork constructs to aid or hinder your players; with the Lifeline, provide support to your players or make their enemies harder to kill. Meanwhile, with the Clockwork Dervish, tear through groups with whirring slashes before spinning away, fighting in a deadly twisting dance. If you want to add a host of new constructs to your 5e games, this supplement (and its sibling supplement Major Mechanicals) is the one for you!

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Designing the Game
Designing the Game
A seemless texture of a pale white paper with various imperfections.
Designing the Game
Designing the Game
A seemless texture of a pale white paper with various imperfections.

I run a long-running D&D 5e campaign for a group of my friends from university, with an artificer as the primary antagonist. The problem is, when I turned to the official material for artificer-adjacent constructs I found... nothing. Well, not quite nothing but vanishingly few. These supplements were my response and attempt to fix that.

I think I did a decent job! The constructs I created are varied and of a range of different power levels, and each have something unique that makes them an interesting adversary. I've created a lot more monsters since then but I will be continuing to terrify my players with these for a while yet.

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What I said at the time

The video these supplements were first released with