High-Altitude Alchemy
Modpackby GalacticSilver
Another ProjectE based skyblock modpack with a few unique twists! Use the powers of EMC to find a way home!
Downloads
8,999
Type
Modpack
CurseForge ID
1329149
Last Updated
Apr 12, 2026
Description
High-Altitude Alchemy is a Skyblock Collection modpack (think ATM: To The Sky) based around using ProjectE transmutation to create and manage your resources.
You've been displaced from your reality by a universe fracturing catastrophe and ended up on a small floating island in a vast void. With nothing to your name except your alchemy tools and a small part of the rift that brought you here in the form of a slice of cake you'll have to put your head to the task of finding a way home!
This modpack does not have traditional skyblock resource mods like Ex Nihilo, you'll have to synthesise all of your materials through a unique progression path utilising the mods available to you with your current resources. Once your pockets are full you can start working on a larger goal: Prismatter, this is a progression-check to see that you've dabbled a little in every mod and can automate a wide variety of items.
Beyond prismatter this pack includes several custom multiblocks, custom singleblock machines and many, many custom items that you will create along your way to even greater heights. This pack features an endgame that involves creative items like many other packs but expects you to use them to accomplish your goal of travelling home!
You'll see many familiar mods such as Mekanism, Botania and AE2, as well as some lesser known new faces like Malum and Embers Aetherworks. Dabble in technology and magic to your heart's desire!
(Please note that this pack is not designed to teach you modded minecraft, work things out yourself, it's a puzzle)

Credit for the script that squashes common forge tags for ingots, plates and dusts goes to ZZZank in the High-Altitude Alchemy discord server. This contribution is greatly appreciated!
Discuss the pack with other players in the Discord server: https://discord.gg/b4vnEjuNAP
Compatibility
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Contained Mods (154)
Just Enough Items (JEI)
View Items and Recipes
GeckoLib
A 3D animation library for entities, blocks, items, armor, and more!
Cloth Config API (Fabric/Forge/NeoForge)
Config Screen API for Minecraft
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Curios API (Forge/NeoForge)
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SuperMartijn642's Config Lib
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FTB Quests (NeoForge)
Questing Mod by FTB
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A fork of Mozilla's Rhino library, modified for use in mods
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FTB XMod Compat
Official multi-mod integrations support for the FTB Mods
Fusion (Connected Textures)
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Yeetus Experimentus
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FTB Ultimine (Forge)
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FTB Chunks (NeoForge)
A mod that allows you to claim chunks to protect your blocks and view minimap / large map
FTB Essentials (Forge & Fabric)
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Fast Leaf Decay
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CodeChicken Lib 1.8.+
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Immersive Engineering
A retro-futuristic tech mod!
Trash Cans
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Cucumber Library
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Torchmaster
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Ars Nouveau
Craft custom spells, summon magical servants, and make powerful wearables and tools!
Mekanism
High-tech machinery, powerful energy generation, fancy gadgets and more. Now on Curse!
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PolyLib
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QoL features added to your AE System.
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Lodestone
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MythicBotany
Dive deeper into the world of botania
HammerLib
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Solar Flux Reborn
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Dank Storage
Big storage in little blocks
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Mekanism Extras
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Cursed Earth Returns
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KubeJS Botania
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KubeJS Ars Nouveau
KubeJS support for Ars Nouveau
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Morph-o-Tool
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Architect's Palette
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PackagedAuto
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PackagedExCrafting
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Just a Well
Adds a configurable well to generate any fluid you need!