New D&D Gelatinous Cube Board Set Oozes Its Way Onto Shelves

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A brand-new tabletop accessory has oozed out of the dungeon and onto store shelves, with Penguin Random House imprint Clarkson Potter recently releasing their new Dungeons & Dragons Gelatinous Cube Board Set.

Designed to resemble the iconic D&D monster, the set contains brand new artwork on the outside and inside features four, double-sided dry-erase battle maps that can be used for hex crawls or tactical encounters. Just released on October 13, 2026, you can pick up the box set now from local book stores, game stores, Penguin and Amazon.

Below, we crack open this cube and sort through all the gooey details.

What is the D&D Gelatinous Cube Board Set?

The Gelatinous Cube Board Set is an officially licensed Dungeons & Dragons accessory published by Clarkson Potter. The exterior art is by veteran TTRPG illustrator Eric Belisle and is designed to resemble a green gelatinous cube. The box itself is 4.76″ wide x 4.75″ tall x 4.77″ deep.

Pry open the set, however, and inside you’ll find four foldable, double-sided dry-erase boards. Each board opens up to measure 12.75” x 8.5”. One side of the board features a standard 1” square grid (which can be used for random encounters or combat), while the other side sports a 1” diagonal hexagonal grid (for exploration). You can use the boards individually or combine them to create larger maps and playing surfaces. (NOTE: A dry erase marker is not included).

How much is the D&D Gelatinous Cube Board Set?

The box retails for $27.99 USD (not including shipping and handling), which is definitely a little on the pricey side, but not unexpected given that this is an officially licensed D&D product and meant to be a display piece as much as an accessory you’ll actually use at the table.

Where can you get the D&D Gelatinous Cube Board Set?

While this is a niche collector’s item, it is distributed by Penguin Random House, so should be available at most major online and physical book sellers, as well as local game stores. Notably, the set was officially released in North America on October 13, 2026.

What is a gelatinous cube in D&D lore?

The gelatinous cube is a transparent, ten-foot-by-ten-foot block of living (and largely unintelligent), acidic jelly that glides silently down dungeon corridors. Because its dimensions match the exact width of standard stone hallways, it acts as an almost invisible natural scavenger, engulfing unwary adventurers, paralyzing them on contact and slowly dissolving their flesh, armor, and equipment while leaving coins and non-organic treasures suspended inside its body.

In terms of publication history, the gelatinous cube remains one of the oldest and most iconic Dungeons & Dragons monsters of all time, having been created by Gary Gygax and first appearing in the original D&D “white box” set from 1974, with a full stat block later published in the 1975 Greyhawk supplement. Since then, the gelatinous cube has appeared in every edition of D&D (although the stat block has changed and new mechanics have been added over the years). It’s also spawned a range of accessories, including its own plushy, dice set and Funko Pop, in addition to making a cameo in the D&D Honor Among Thieves film.

Final thoughts

It’s always great when official D&D merchandise leans into the game’s lighter side while still delivering genuine utility at the table. And while the new Gelatinous Cube Board Set might not be for everyone, it’s still a pretty cool-looking collector’s piece that also has some legit utility at the table.

If you’re interested, you can pick up the set now from local book stores, game stores, Penguin and Amazon.

Below is also an unboxing video from the official Dungeons & Dragons Fanatics website.

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