uPack

uPack

A client sided mod pack aimed at performance, utility and visuals.

by CtrlUser
216 Downloads
0 Followers
fabricMC 1.21.11magicmultiplayeroptimization

About this Modpack

Description:
Introducing uPack!

Dive into a Minecraft experience that’s as versatile as it is vibrant. This modpack is entirely client-sided, meaning you can join any server without a hitch. Enjoy an array of features designed to enhance every aspect of your gameplay such as:

Visual Upgrades: Support for shaders and OptiFine resource packs brings stunning visuals, including 3D items, unique bed textures, animated mobs, and custom sky boxes. Explore dark, custom GUIs and fonts that transform your game’s interface.

Performance & Optimization: Experience greatly optimized gameplay with improved chunk generation, a refined lighting engine, bug fixes, and memory leak resolutions that keep things running smoothly—even on lower-end setups.

Utility & Customization: Equip yourself with an assortment of in-game tools, from viewing ping and block information to advanced inventory management and a dedicated mod menu. Coloured subtitles, networking improvements, and even a zoom feature give you more control over your game.

Resourceful Extras: Take advantage of the resource packs that range from 8-bit and 16-bit styles to enhanced programmer art, along with world generation datapacks and various utilities that make Minecraft menus (like statistics) more insightful.

Unique Connectivity: Whether you’re communicating via in-game voice chat, copying screenshots directly, or joining servers across different versions (including Bedrock), this modpack bridges the gap for a seamless multiplayer experience.

Every feature has been carefully integrated to ensure you enjoy enhanced visuals, improved performance, and a smoother, more engaging gameplay experience. Welcome to a world where utility meets style, and Minecraft is taken to a new level!

Disclaimer:
Some of these mods may not be allowed on some servers. Please confirm if they can be used on the said server or not. "Gamma Utils (Fullbright)", "Inventory Profiles Next", "Bedrockify" and "ViaFabricPlus" can cause problems.
I am not responsible for any punishments you may receive using this mod pack.

Credits:
All the original credit goes and should go to all the mod creators who created the mods, spending hundreds of hours.
I only created this mod pack. Please support the mod, resource pack and shader pack creators, not me!
[ChatGPT] for the description and the logo

Mods used:
AppleSkin, BadOptimizations, Bedrockify, Better Beds, Better Ping Display, Better Statistics Screen, BetterF3, BetterGrassify, Carpet, CIT Resewen, C2ME, Continuity, Dark Loading Screen, Distant Horizons, Dynamic FPS, Enchanced Block Entities, Entity Culling, Entity Model Features, Entity Texture Features, Entity Sound Features, Fabric Skyboxes, Faster Random, FastQuit, FerriteCore, Gamma Utils, GPUTape, ImmediatelyFast, Inventory Profiels Next, Iris Shaders, Jade, LambDynamicLights, Lithium, Memory Leak Fix, Mod Menu, Model Gap Fix, ModernFix, More Cullling, MoreMcmeta, Noisium, Not Enough Animations, Noxesium, OptiGUI, Packet Fixer, Palladium, Particle Core, Polytone, Reese's Sodium Options, Screenshot to Clipboard, Server Pinger Fixer, ServerCore, Shulker Box Tooltip, Simple Voice Chat, Smooth Scrolling, Sodium, Sodium Extra, Sodium Leaf Culling, ThreadTweak, Very Many Players, ViaFabricPlus and Zoomi.

Resource Packs:
3D Ultimate, Ashen 16x, Dark Smooth GUI, Dramatic Skys, Even Better Enchants, Fancy Beds, Fresh Animations, Icons, Kosmolot's Colored Subtitles, Pollachius, Programmer Art Fix, qrafty's Capitalized Font and Unique Dark Refined.
Shader Packs:
Complementary Shaders - Reimagined, Rethinking Voxels.

Available Versions

uPack 1.3.1release
MC 1.21.11fabric13 downloads
April 24, 2026
uPack 1.3.0release
MC 1.21.11fabric24 downloads
March 1, 2026
uPack 1.2.1release
MC 1.21.10fabric7 downloads
March 1, 2026
uPack 1.2.0release
MC 1.21.10fabric31 downloads
October 21, 2025
uPack 1.1.1release
MC 1.21.9fabric10 downloads
October 21, 2025

How to Set Up a uPack Server

1

Order Server

Choose at least 6 GB RAM (8 GB recommended for uPack). Based on player count: per 5 players.

2

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "uPack" and click "Install". The fabric loader and Minecraft 1.21.11 are configured automatically.

3

Start Server & Play

Start the server – all mods are loaded automatically. Share the server IP with friends and play together!

Frequently Asked Questions

uPack server crashes or won't start – what to do?

Most common causes: insufficient RAM or wrong fabric loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 8 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.

How much RAM does a uPack server really need?

Minimum 6 GB, recommended 8 GB for stable performance. per 5 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €12/month).

Can I add custom mods to uPack without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.11). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.

uPack server lagging – performance tips

1) Increase RAM to 8 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.

Rent uPack Server

Start your own server with automatic modpack installation.

Recommended RAM:
8 GB(min. 6 GB)
From 12.00 / month
Create Server Now
1-Click Modpack Install
NVMe SSD Storage
DDoS Protection included
Automatic Backups

Details

License
Creative Commons Attribution Non Commercial Share Alike 4.0 International
Server-side
Unsupported
Client-side
Required

Supported Versions

1.21.111.21.101.21.91.21.1

Start your uPack Server now

From €12.00/month with 8 GB RAM for the best performance.

Configure Server →