
JAM
Explore and create with Valkyrien Skies 2, Create, Distant Horizons, Botania, and AE2 in this feature-packed modpack!
Screenshots

About this Modpack
JAM: Just A Modpack 🌌⚙️🚀
Version: 1.2.3
Overview
JAM is a cutting-edge modpack for players who want to explore experimental mechanics, game-changing systems, and immersive gameplay. From sky-faring ships to reimagined automation, it delivers a unique mix of innovation, adventure, multiplayer fun, and optimization.
Core Features
🚀 Experimental Mods & Game-Changing Systems
- Valkyrien Skies 2: Build and pilot airships with Eureka Ships and Clockwork.
- Physics Mod Pro (Compatible): The mod is freely available here from the original author. Consider showing support if you enjoy his work! 😊
- Distant Horizons: Extend render distances for breathtaking views.
- Create & Add-Ons: Build intricate contraptions with expansions like Steam 'n' Rails, Big Cannons, and more.
- Ad Astra: Explore space and distant planets, expanded by the Giselle Addon.
- CC: Tweaked: Program custom automation and build smarter systems.
- Botania: Combine magic and automation for powerful creations.
🌍 Adventure & Exploration
- World Generation: Stunning biomes with Oh The Biomes We've Gone and Terralith.
- Structures: Discover unique structures from AdoraBuild and others.
- Grappling Hooks: Swing into action for added mobility and fun.
🛠️ Expanded Crafting & Survival
- Tools & Weapons: Unlock advanced crafting with Forgero.
- Enchanting Overhaul: Rework enchantments with Zenith.
- Food System: Overhauled with Spice of Fabric (enabled carrot mode).
🎮 Multiplayer Fun
- Simple Voice Chat: Talk with friends in real time.
- Sound Physics Remastered: Enjoy immersive soundscapes.
- Heracles: Adds tree-style quests for collaborative progression.
- Argonauts: Enables party and guild systems for team play.
- Cadmus: Provides land-claiming and protection for secure builds.
⚡ Performance & Optimization
- Rendering & Performance: Enhanced visuals with Sodium, Iris, and Distant Horizons.
- Fixes: Ensure smoother gameplay with ModernFix, Debugify, and more.
- Building Made Easier: Use Effortless Structures for hassle-free construction.
Why Play JAM?
- Innovation: Push Minecraft’s limits with experimental mods like Valkyrien Skies 2 and Physics Mod Pro.
- Immersion: Stunning visuals, dynamic exploration, and intuitive building tools.
- Multiplayer Fun: Experience engaging cooperative gameplay with Simple Voice Chat, Sound Physics Remastered, and multiplayer-friendly mods.
- Optimization: A lag-free experience with performance mods built into the pack.
- Balance: A mix of eploration, adventure, automation, and survival for every playstyle.
System Requirements
- 8GB RAM or more recommended.
- A modern GPU for optimal graphics with Iris and Distant Horizons.
Credits
Special thanks to the amazing modding community for their incredible work and creativity.
Available Versions
How to Set Up a JAM Server
Order Server
Choose at least 6 GB RAM (8 GB recommended for JAM). Based on player count: per 5 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "JAM" and click "Install". The fabric loader and Minecraft 1.20.1 are configured automatically.
Start Server & Play
Start the server – all mods are loaded automatically. Share the server IP with friends and play together!
Frequently Asked Questions
JAM 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 JAM 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 JAM without conflicts?
Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.20.1). 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.
JAM 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.
Similar Modpacks
Rent JAM Server
Start your own server with automatic modpack installation.
Details
- License
- GNU Lesser General Public License v3.0 only
- Server-side
- Required
- Client-side
- Required
Supported Versions
Start your JAM Server now
From €12.00/month with 8 GB RAM for the best performance.
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