Foundation stone for architectural building

Themelios, meaning “Foundation Stone”, brings ERYDON’s stone and marble materials to a compact collection of architectural building blocks.

Create floors, façades, courtyards, foundations, interiors and columns with coordinated materials and simple, adaptable shapes. Themelios works independently and can also complement ERYDON wherever both mods support the same Minecraft version.

Glacium building forms shared by Themelios and ERYDON, shown with the 64x Collection pack and Complementary Unbound.

Building shapes

• Full blocks, slabs, stairs and walls.
• Posts and horizontal and vertical slices.
• Horizontal and vertical layers.
• Small and Large Cylinders.
• Small and Large Cornices with straight runs, inside corners and outside corners.

Layers can be built up by adding pieces. Cornices connect around corners, while cylinders provide simple circular forms for columns and other architectural details.

Materials and patterns

Build with a palette of 27 coordinated stone materials, including marble-inspired surfaces, fresh and aged stone, Ashlar, Rusticated, Hewn and Rock finishes.

The collection also includes Herringbone, mixed-stone Weave and decorative Bronze and Silver inlays.

Where compatible ERYDON finish settings are available, supported stone names follow the shared Honed, Polished or Ganosis (mirror finish) preference. Save and restart Minecraft after changing those preferences.

Dark veined stone from the Themelios material palette.

Built-in connected textures

Themelios includes Synapheia, its own connected-texture engine. Continuity is neither bundled nor required.

Supported surfaces share world-aligned material patterns across full blocks and partial shapes, helping slabs, stairs, walls, posts, layers and slices form consistent stonework.

Native textures and optional resource packs

Native 16x textures are included, so a separate resource pack is not required.

For higher-resolution materials and PBR maps, choose one optional pack:

• ERYDON 32x Resource Pack.
• ERYDON 64x Resource Pack.

The same packs support both Themelios versions, as well as compatible ERYDON and Daedalon installations. Shader effects depend on your shader and settings.

Finding your blocks

Browse the dedicated Creative tab or use the optional REI, JEI or EMI integrations.

REI provides seven collapsible shape groups with matching subsets. JEI includes information pages explaining the main shape families and woven materials.

English, German and Spanish names are included. Shared search terms cover materials, finishes, everyday shape names and legacy names.

Installation

Choose the file matching your Minecraft version.

Minecraft 1.20.1

• Fabric Loader 0.16.10 or newer.
• Fabric API for Minecraft 1.20.1.
• Java 17.
• If using Sodium 0.5.x, also install compatible Indium.

Minecraft 1.21.1

• Fabric Loader 0.19.3 or newer.
• Fabric API for Minecraft 1.21.1.
• Java 21.
• Sodium 0.6 supports the required rendering features directly and does not need Indium.

Install Themelios on both the client and server for multiplayer. Sodium, Iris and recipe viewers are optional.

ERYDON-family compatibility

This release uses family compatibility generation compat2.

Installed ERYDON-family mods and official resource packs must use the same compatibility generation. Each product’s individual version number can differ.

Permanent aliases preserve the block and item identifiers inherited from earlier published Themelios releases.

Links and licence

• Source — Minecraft 1.20.1
• Source — Minecraft 1.21.1
• Report an issue
• Oliver’s Minecraft Mods Restricted License 1.0
• Third-party notices

Screenshot credits

Shaders: Complementary Unbound by EminGT. Where shown, foliage, furniture and lanterns are from Conquest Reforged by ConquestStudios, and roofs are from Mythrais by Elandria.