Guide — Depths & Beyond

Launcher note: This guide uses the Modrinth App. If you prefer another Minecraft launcher, the names and locations of buttons may differ. The end result should still be a Minecraft Java Edition 1.20.1 instance using the Fabric mod loader with the latest compatible loader revision, the Depths & Beyond mod files installed, and enough RAM allocated for the pack.

Video walkthrough

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Step 1

Create a new Modrinth instance

Open the Modrinth App and click the + button on the left-hand side to create a new instance.

Modrinth plus button showing the Create new instance tooltip — Click **Create new instance**.

In the Create Instance window, choose Custom setup. This lets us select the exact Minecraft version and mod loader required by the server.

Modrinth Create instance window with Custom setup highlighted — Select **Custom setup**.

Step 2

Configure Minecraft 1.20.1 with Fabric

Give the instance a name such as Depths & Beyond, choose Fabric as the loader, and set the game version to 1.20.1.

For the loader version, use the latest stable revision available for Minecraft 1.20.1. Once everything matches, click Create instance and wait for Modrinth to finish installing the base game and Fabric loader.

Modrinth custom instance setup configured for Fabric and Minecraft 1.20.1 — Use **Fabric**, Minecraft **1.20.1**, and the latest stable loader revision.

Step 3

Upload the Depths & Beyond mod files

After the instance has finished installing, open it in Modrinth. On a new instance you should see a No content installed screen.

The Depths & Beyond download will be supplied as a .zip archive. Extract that archive somewhere easy to find, then click Upload files in Modrinth and select the individual .jar files from inside it. You can select all of the mod JARs at once.

Important: Do not place the downloaded .zip itself in the mods folder, and do not create an extra folder inside mods. The individual .jar files must sit directly inside the instance's mods folder.

Modrinth instance content screen with Upload files highlighted — Extract the downloaded modpack ZIP first, then use **Upload files** to add the individual JAR files.

Step 4

Allocate more memory

Depths & Beyond is considerably heavier than vanilla Minecraft, so the instance needs more memory than Modrinth normally allocates by default.

Open the instance and click the gear icon next to the Play button to enter Instance settings.

Modrinth Instance settings gear icon — Open **Instance settings**.

Enable Custom memory allocation and increase the amount of RAM available to the instance. Depths & Beyond requires a minimum of 6 GB / 6144 MB. For most players, we recommend 8 GB / 8192 MB if your computer has enough system memory available.

Avoid allocating all of your system RAM to Minecraft. If your PC only has 8 GB of RAM in total, the modpack may struggle to run comfortably alongside Windows and other applications.

Modrinth custom memory allocation setting — This screenshot shows where to configure memory. It is set to **12 GB** here, but most players should start with **8 GB / 8192 MB**.

Step 5

Set the custom JVM arguments

In the same instance settings, enable Custom Java arguments and paste the arguments below into the field. These provide lightweight garbage-collection tuning without forcing a specific amount of RAM; keep memory allocation configured using Modrinth's Custom memory allocation setting from the previous step.

Modrinth Custom Java arguments setting enabled with JVM arguments entered — Enable **Custom Java arguments**, then paste the full line below.

-XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UseStringDeduplication -XX:+PerfDisableSharedMem

Memory note: These JVM arguments do not set the amount of RAM Minecraft can use. Keep your RAM allocation configured separately through Modrinth's Custom memory allocation setting above.

Step 6

Launch the pack

Return to the instance page and click Play. The first launch may take longer than usual while Minecraft initializes the modpack and creates its configuration files.

Once the main menu appears, the client-side installation is complete.

Next: joining the SMP. The in-game Multiplayer steps and server-list screenshot will be added here once that part of the guide is ready.