by Blender Easy·Modeling
Images © Blender Easy. Used for product review; image policy.
Stands out for pairing Geometry Nodes with instancing to build grounded, zero-gap piles while keeping the viewport responsive at high instance counts.
Geo Stacks Add-On is a Blender add-on from Blender Easy for creating dense, realistic stacks of objects directly on any surface. It's built on Geometry Nodes and instancing, generating complex piles while keeping the scene fast and responsive even at high instance counts. Assets work best when the meshes inside a collection share similar heights.
The workflow runs from collections: create a collection, add the meshes you want to stack, then select a target surface and add the tool from the N-Panel. Zero-Gap Instancing produces clean stacking with no floating objects or gaps, and Automatic Center Correction aligns assets internally for grounded piles. Procedural controls adjust height, spacing, and variation, while Natural Variation adds controlled disorder for realism.
Volumetric Masking restricts where stacks are generated using a 3D boundary, and the controls sit in an intuitive N-Panel. Listed compatibility covers Blender 4.1 through 5.1, with Cycles and Eevee support, under an MIT license. A demo video is available.
Geo Stacks Add-On is best for blender artists generating dense stacks and piles of objects on a surface from collections of similar-height assets.
Geo Stacks Add-On is completely free to download and use.
Geo Stacks Add-On lists compatibility with Blender versions 4.1 through 5.1, so it covers recent releases across that range. It works with both the Cycles and Eevee render engines. Because it's built on Geometry Nodes and instancing, it relies on those features being available in your build. If you're running a version within the stated range, you should be able to install and enable it from the Add-ons preferences and start generating stacks from the N-Panel. For anything version-specific, the developer's page and documentation are the place to check.
Geo Stacks Add-On supports both Cycles and Eevee, the two render engines listed for it. Its stacks are built with Geometry Nodes and instancing, which keeps instance counts high while the viewport stays smooth, so the same setup works in either engine. You can pick whichever engine suits your project and tune height, spacing, and variation through the procedural controls. For engine-specific settings or the latest details, refer to the developer's page and documentation.
Geo Stacks Add-On installs through Blender's standard flow: open Edit, then Preferences, then Add-ons, then Install, and select the stack_generator.zip file, then enable Stack Generator in the Add-ons list. From there, create a collection and add the meshes you want to stack, using assets of similar heights for the best results. Select your target surface mesh, add the tool from the N-Panel, choose your collection, and fine-tune the stacking behaviour with the available controls.
Geo Stacks Add-On is listed as free here in the catalog, and it's distributed under the MIT license. The listing also mentions product updates and a period of support from Blender Easy. Licensing and support terms can change over time, so check the developer's page for the current arrangement before you rely on it. For the most accurate, up-to-date licensing and support details, the developer's own page is the place to confirm.
Geo Stacks Add-On works from a collection of meshes, and it produces the cleanest results when the assets inside that collection share similar heights. You point it at a target surface, choose the collection, and it builds the stack using Automatic Center Correction to align assets into grounded piles and Zero-Gap Instancing to avoid floating objects or gaps. From there you can add Natural Variation for controlled disorder and use Volumetric Masking to restrict where stacks appear.
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