---
title: "Better MC (BMC4 / BMC5) in Prism Launcher — Install, RAM & Java Guide"
description: "How to install and run Better MC (BMC4 / BMC5) (CurseForge & Modrinth) in Prism Launcher on Windows. Recommended RAM: 6 GB – 8 GB, Java: Java 17 or Java 21."
canonical: https://prismlauncher.ink/modpacks/better-mc-bmc4
updated: 2026-10-17
---

# Better MC (BMC4 / BMC5) on Prism Launcher

Vanilla-plus adventure overhaul adding dozens of new biomes, dungeons, dragons, and quality-of-life dimensions. Runs on Fabric / Forge / NeoForge with 6 GB – 8 GB RAM and Java 17 or Java 21.

## Facts (2026-10-17)

- **Modpack:** Better MC (BMC4 / BMC5)
- **Source Platform:** CurseForge & Modrinth
- **Mod Loader:** Fabric / Forge / NeoForge
- **Recommended RAM:** 6 GB – 8 GB
- **Java Requirement:** Java 17 or Java 21

## How to install Better MC (BMC4 / BMC5) in Prism Launcher

Vanilla-plus adventure overhaul adding dozens of new biomes, dungeons, dragons, and quality-of-life dimensions.

Click **Add Instance** on the Prism Launcher toolbar, choose **CurseForge** on the left sidebar, search for **Better MC (BMC4 / BMC5)**, and click **OK**. Prism downloads the manifest and all mod JARs into an isolated instance folder.

## Recommended Java and memory settings on Windows

- **Java runtime:** Java 17 or Java 21. Configure this under [Java Settings](https://prismlauncher.ink/java) so the pack does not fail the startup compatibility check.
- **Memory allocation:** Set Maximum Memory (`-Xmx`) to **6 GB – 8 GB** under Edit Instance → Settings → Memory.
- **Need the app?** Grab the Windows installer or portable build from [/download](https://prismlauncher.ink/download).

## FAQ

### What if CurseForge blocks a few mods while installing Better MC (BMC4 / BMC5)?

Prism Launcher opens the download pages for any blocked mods and watches your Windows `Downloads` folder automatically — click Download in your browser and Prism moves the files into place.

### How much RAM does Better MC (BMC4 / BMC5) need?

Allocate 6 GB – 8 GB under Edit Instance → Settings → Memory, and ensure you are running 64-bit Java 17 or Java 21.

## Related

- [Prism Launcher Modpacks & Mod Downloader](https://prismlauncher.ink/modpacks)
- [How Prism Launcher's Automatic Downloads Watcher Handles Blocked CurseForge Mods](https://prismlauncher.ink/modpacks/fix-curseforge-blocked-mods-download-popup)
- [How to Allocate More RAM to Minecraft in Prism Launcher](https://prismlauncher.ink/java/how-to-allocate-more-ram-in-prism-launcher)
- [Prism Launcher Instance Management](https://prismlauncher.ink/instances)
- [Fabulously Optimized on Prism Launcher](https://prismlauncher.ink/modpacks/fabulously-optimized)

## Download

Free and open source: [Download Prism Launcher](https://prismlauncher.ink/download)

Markdown mirror: https://prismlauncher.ink/modpacks/better-mc-bmc4.md