Modrinth · Minecraft modpack

Horizon Assembly

Horizon Assembly is a Create-focused industrial survival modpack built around automation, civilization building, exploration, and warfare.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Horizon Assembly release should I use?

Updated 3 months ago

beta file Horizon Assembly 1.4

Game version 1.21.1

Loader NeoForge 21.1.228

Horizon Assembly 1.4 is a complete pack release for 1.21.1 with NeoForge 21.1.228. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. For this loader, use Java 21. 73 mods in this pack file.

Pack setup

How should I set up Horizon Assembly for players and a server?

Use Horizon Assembly 1.4 as the pack version. Install the pack as its own launcher instance. The creator’s listing does not name a separate server file, so check the release notes before setting up a dedicated server. Do not upload the ordinary client folder blindly.

Client instance Install Horizon Assembly 1.4

Dedicated server setup Match Horizon Assembly 1.4

Pack loader NeoForge 21.1.228

Java version Java 21

A pack is a matched client and server setup, not one mod with an install-side label. Keep its release, loader, manifest and overrides together.

Plan the server requirements Read the Minecraft installation guide

Referenced mods 73

Client only 13

Server only 7

Not labelled 53

These numbers come from the pack file you chose. “Not labelled” means we don’t know which side it belongs on—not that it is safe everywhere. The file count is not a RAM estimate.

What are the server requirements for Horizon Assembly?

Horizon Assembly 1.4. Change the pack release and its contents or setup may change too.

73 mods in this pack file

The selected pack release is Horizon Assembly 1.4. That file is for Minecraft 1.21.1 with NeoForge 21.1.228. This NeoForge setup needs Java 21. It contains 73 mod projects. The creator’s listing does not name a separate server file. Check their notes before using one, and do not upload an ordinary client folder or rebuild the pack mod by mod. A file count cannot tell us the right RAM, CPU or storage; size the server for the players and world you actually run.

About this project

What kind of pack is Horizon Assembly?

Horizon Assembly blends large-scale industrial engineering with civilisation building, territorial expansion, and mechanical warfare. Powered by the Create ecosystem and a carefully selected collection of automation, optimisation, survival, and infrastructure mods, the pack delivers immersive factory progression alongside player-driven worldbuilding and faction gameplay. Whether you’re constructing sprawling industrial cities, designing advanced logistics networks, manufacturing artillery, or launching aircraft into the skies, Horizon Assembly gives you the tools to shape your own mechanical empire.

Everything is configured for stability, multiplayer scalability, and long-term progression while remaining lightweight and performance-focused. No unnecessary visual overhauls or forced client-side additions are included, allowing players to customize the experience with their own shaders, minimaps, or cosmetic enhancements if desired.

Mods

AI Improvements by Built Broken Modding – improves entity AI efficiency and reduces server lag from mob processing Almanac by frikinjay – adds in-game informational utilities and documentation systems AppleSkin by squeek502 – displays hunger and saturation values directly in the HUD Architectury API by architectury – cross-platform API required for multiple mod integrations Backpacked: World of Color by Beast135 – customizable backpack storage and portable inventory expansion Chunky by pop4959 – pre-generates chunks to improve exploration performance and server stability Cloth Config API by shedaniel – provides in-game configuration menus for supported mods Clumps by Jaredlll08 – merges experience orbs together to reduce lag in farms and combat areas Controlling by Jaredlll08 – improves keybind management and conflict detection Corpse by henkelmax – stores player inventories in recoverable corpses after death Create by simibubi – introduces rotational power, automation systems, logistics, and mechanical engineering Create Aeronautics by Simulated Team – expands Create with aircraft construction and aerial transportation systems Create Big Cannons by realRobotix – adds large-scale artillery, ammunition manufacturing, and siege weaponry Create Slice & Dice by possible_triangle – automates food preparation and kitchen processing systems Create: Gunpowder by aspctt – introduces explosive production chains and industrial munitions Create: Rustic Structures by robinfrt – adds naturally generated rustic Create-themed structures throughout the world Create: Structures Arise by SmartStreamLabs – expands world generation with large Create-inspired industrial structures Cull Leaves by Motschen – improves rendering performance by hiding invisible leaf faces Curios API by TheIllusiveC4 – adds accessory and equipment slot support for compatible mods Dynamic FPS by juliand665 – lowers resource usage while the game is unfocused or idle Entity Culling by tr7zw – improves FPS by preventing hidden entities from rendering Farmer’s Delight by vectorwing – expands farming, cooking, crops, and food progression systems FDLib by FINDERFEED – shared dependency library for supported gameplay systems FerriteCore by malte0811 – optimizes memory usage and improves large modpack performance

Project description from Modrinth.

Mods in Horizon Assembly 1.4

Open any mod on Modpacks.ch to check its files and dependencies.

[1.21.1] SecurityCraft v1.10.1.jar SHA-1 692f81f4fdcd0d1298db96a9582eea41baeae252 · Modrinth version 5yIP4ezg · Project link unavailable Side not labelled

AI-Improvements-1.21-0.5.3.jar SHA-1 b4a8e11384454bcc341043b251db7fb5afdfdf45 · Modrinth version dGNP90t0 · Project link unavailable Server only

Almanac-1.21.1-2-neoforge-1.5.2.jar SHA-1 d613dbc38ca5bcc718408db432385c2e67ac763f · Modrinth version cHGan9fQ · Project link unavailable Server only

appleskin-neoforge-mc1.21-3.0.9.jar SHA-1 81cf0e668f991f83ac8820c386fbd6c9c3602246 · Modrinth version uAKA6Laj · Project link unavailable Side not labelled

architectury-13.0.8-neoforge.jar SHA-1 6ca11d3cc136bf69bb8f4d56982481eb85b5100b · Modrinth version ZxYGwlk0 · Project link unavailable Side not labelled

Chunky-NeoForge-1.4.23.jar SHA-1 ab0c74743a653020fe2dfc4986b43e893947f3e9 · Modrinth version LuFhm4eU · Project link unavailable Side not labelled

cloth-config-15.0.140-neoforge.jar SHA-1 c3e5733ba4503b102589a026000fd5ce0212f6f2 · Modrinth version izKINKFg · Project link unavailable Side not labelled

Clumps-neoforge-1.21.1-19.0.0.1.jar SHA-1 fa2576297c7bd12b28aa7070e8141792bd66da4c · Modrinth version jo7lDoK4 · Project link unavailable Side not labelled

connectiblechains-neoforge-1.21.1-1.2.5.jar SHA-1 874fac90a314f80c28e1564abc7070ca4bc3890a · Modrinth version haHsKT7H · Project link unavailable Side not labelled

connector-2.0.0-beta.14+1.21.1-full.jar SHA-1 930067497b5c1249e51b3e33620ab4e72dc92f4c · Modrinth version 1i8teo7m · Project link unavailable Side not labelled

Controlling-neoforge-1.21.1-19.0.5.jar SHA-1 8a34424fc1428778be2fdbfa4da67b21b70bcbfe · Modrinth version FaNppCJJ · Project link unavailable Client only

copycats-3.0.4+mc.1.21.1-neoforge.jar SHA-1 6a11d5806bcf521e08faba1ee6ef5f31af55ca0f · Modrinth version kecZ0sl7 · Project link unavailable Side not labelled

Corgilib-NeoForge-1.21.1-5.0.0.9.jar SHA-1 6699f876f9e10f936910055f7fe1a283d8bb9e0f · Modrinth version nqrTa84r · Project link unavailable Side not labelled

corpse-neoforge-1.21.1-1.1.13.jar SHA-1 a735362c4e5ef705956f1fcbac01fb9f1aae5b8e · Modrinth version Zwf8nv8y · Project link unavailable Side not labelled

create_rustic_structures-1.0.0-neoforge-1.21.1.jar SHA-1 1f0f0f1fc4202eaaa3470c76d6b18f776762d85f · Modrinth version WeXjf3zz · Project link unavailable Side not labelled

create-1.21.1-6.0.10.jar SHA-1 0e97e49837bed766e6f28a4c95b04885d6acc353 · Modrinth version UjX6dr61 · Project link unavailable Side not labelled

create-aeronautics-bundled-1.21.1-1.2.1.jar SHA-1 fdf1ae69e8b6437e0196b3a35dd2325aa904aba9 · Modrinth version YhZLrAFC · Project link unavailable Side not labelled

createbetterfps-1.21.1-1.1.4.jar SHA-1 c594e20659b73a67bd0b0c2de45b29b78a2eb160 · Modrinth version QWqEdWHy · Project link unavailable Client only

createbigcannons-5.11.3+mc.1.21.1.jar SHA-1 8b61fa850e260bdeb5d360576123f98c260afa50 · Modrinth version bsGaXKEd · Project link unavailable Side not labelled

creategunpowder-1.21.1-1.0.1.jar SHA-1 d1c332f4a24e3eda79e883df94969a193b046076 · Modrinth version pXUo7zXV · Project link unavailable Side not labelled

cullleaves-neoforge-4.1.1+1.21.1.jar SHA-1 0ea35e716f486a0607e01db8928ff7bea8148b39 · Modrinth version V7PU4g8I · Project link unavailable Client only

curios-neoforge-9.5.1+1.21.1.jar SHA-1 418fcd42e3a7844c9bdc71c9b6401fdb3894e0c4 · Modrinth version yohfFbgD · Project link unavailable Side not labelled

dungeons-and-taverns-v4.4.4.jar SHA-1 249a5bdd0e8622b8a11f88758e6f5fd5fda036a3 · Modrinth version BYUUUeZA · Project link unavailable Side not labelled

dynamic-fps-3.11.4+minecraft-1.21.0-neoforge.jar SHA-1 35b17e95b2b65930116ccc83e0cc358ac1bfcf9e · Modrinth version T238FZpQ · Project link unavailable Client only

entityculling-neoforge-1.10.2-mc1.21.1.jar SHA-1 6c6f885e0359c2b0601cbec76fda406caeb49cca · Modrinth version 2tOn8XA2 · Project link unavailable Client only

FarmersDelight-1.21.1-1.3.1.jar SHA-1 49477fafca740e7ae348d934b552fb313358e8fe · Modrinth version 9gp7w8NC · Project link unavailable Side not labelled

fdlib-1.0.8-1.21.1.jar SHA-1 40d41190d8e811b0a874806eedb98b767d091656 · Modrinth version bZKs2lFt · Project link unavailable Side not labelled

ferritecore-7.0.3-neoforge.jar SHA-1 9563692efb708b6b568df27a01ec52f6311928ef · Modrinth version x7kQWVju · Project link unavailable Side not labelled

geckolib-neoforge-1.21.1-4.8.4.jar SHA-1 eb854c8ec53ef922a5f3877a1aa4c1ce1352e0ce · Modrinth version gFmrC8Ru · Project link unavailable Side not labelled

guardvillagers-2.4.7-1.21.1.jar SHA-1 f49fdffa04398ad5344667f03b0bf581bae0280d · Modrinth version TP9ZaQc3 · Project link unavailable Side not labelled

ImmediatelyFast-NeoForge-1.6.10+1.21.1.jar SHA-1 f1f5cccd7cb59d875f44566b2e557ccecc8c33fb · Modrinth version PhxY0iHw · Project link unavailable Client only

iris-neoforge-1.8.8+mc1.21.1.jar SHA-1 79f5cb567372a51d695b690ca96e948294e45c44 · Modrinth version oXIoDcGE · Project link unavailable Client only

Jade-1.21.1-NeoForge-15.10.5.jar SHA-1 d5bf134b3dbde9f5258666823900e21341dc0a50 · Modrinth version yd8FKCmx · Project link unavailable Side not labelled

jei-1.21.1-neoforge-19.27.0.340.jar SHA-1 27d0d85e7e32e926fc3664ab6815df5cdabb7941 · Modrinth version YAcQ6elZ · Project link unavailable Side not labelled

kotlinforforge-5.11.0-all.jar SHA-1 4d83e8a8e8cb06b306d2cea1e903680fe513f1f3 · Modrinth version NrSebcsG · Project link unavailable Side not labelled

lambdynamiclights-4.8.8+1.21.1.jar SHA-1 d0ab30eebffdb999c07964c5775b199792b5cf46 · Modrinth version IQcvNDtF · Project link unavailable Client only

letmedespawn-1.21.x-neoforge-1.5.0.jar SHA-1 576fe2edaa96e7e71015287457bd52f87646d968 · Modrinth version fgcMDg9B · Project link unavailable Server only

lootr-neoforge-1.21.1-1.11.37.120.jar SHA-1 a8acaf64fb3991526bfe7456189ccde247334265 · Modrinth version C2tLycH2 · Project link unavailable Side not labelled

midnightlib-neoforge-1.9.3+1.21.1.jar SHA-1 e0c9a1ffc6a53435029a23d9c110c44620595469 · Modrinth version 6Gv5jvTB · Project link unavailable Side not labelled

modelfix-1.21-1.10.jar SHA-1 9608b1bff92e075ad8c2feb07f7ef095f6887117 · Modrinth version X2U8ceG9 · Project link unavailable Client only

modernfix-neoforge-5.27.7+mc1.21.1.jar SHA-1 e6aa8b31150c9bae8eded03ba9137d66b7452252 · Modrinth version Ml6xWbje · Project link unavailable Side not labelled

moogs_structures-neoforge-1.21.1-2.0.2.jar SHA-1 02b67121196776b2dc1ce69a057e19bf59d19f4d · Modrinth version 9eOgZ04o · Project link unavailable Server only

MoogsEndStructures-1.21-2.0.2.jar SHA-1 746eea80e0df09b873f3e9b3883d8cbf889b0912 · Modrinth version oN0WTi2D · Project link unavailable Server only

MoogsVoyagerStructures-1.21-5.0.9.jar SHA-1 5f2c232681510e27486b589afbbbaebdd1feee7f · Modrinth version w8dck0sA · Project link unavailable Server only

moonlight-neoforge-1.21.1-3.0.7.jar SHA-1 d2a8f9b2a7ddd7dc72cc880a4b2aaaacda72c42c · Modrinth version GjDWHqm5 · Project link unavailable Side not labelled

moreculling-neoforge-1.21.1-1.0.7.jar SHA-1 834cc35294be3bb514bc0ba571ab7337961af383 · Modrinth version BvOuEhk4 · Project link unavailable Client only

MouseTweaks-neoforge-mc1.21-2.26.1.jar SHA-1 6dae57f4f50f7808d2ed9a18f6cd1c0d4640c6bc · Modrinth version 9I21YYxf · Project link unavailable Client only

OctoLib-NEOFORGE-0.6.2+1.21.jar SHA-1 f4f66d677b104c6af7f5c0f7e3c08d8e4370ecad · Modrinth version yVCCi6TK · Project link unavailable Side not labelled

Oh-The-Biomes-Weve-Gone-NeoForge-2.5.5.jar SHA-1 b7d028def9c15698dff076e1c606d4496f0a2730 · Modrinth version 6cLkgRgD · Project link unavailable Side not labelled

Oh-The-Trees-Youll-Grow-neoforge-1.21.1-5.3.1.jar SHA-1 9a9aff0b8ba8675b3cdd8f8259952355cff9236e · Modrinth version oOXz8pIt · Project link unavailable Server only

open-parties-and-claims-neoforge-1.21.1-0.26.2.jar SHA-1 fa16d80d0805eb4c2998bbe0e4eec5185f53c21d · Modrinth version b16WHzyv · Project link unavailable Side not labelled

Patchouli-1.21.1-93-NEOFORGE.jar SHA-1 5413bb9b8fc35ebe46b06b48bf9afafbd8471140 · Modrinth version BIogJv2D · Project link unavailable Side not labelled

polymorph-neoforge-1.1.0+1.21.1.jar SHA-1 84f8c539fa326dc723ae62b7a6916d6b01982d07 · Modrinth version VEburL70 · Project link unavailable Side not labelled

raidsenhanced-1.0.2-1.21.1.jar SHA-1 c22960dc0786ddda5771f0a99fcdc1e2955c6f5d · Modrinth version nWec2xcv · Project link unavailable Side not labelled

railways-0.2.0-beta.2+neoforge-mc1.21.1.jar SHA-1 2767bb73a33358b7796239310416b13db476f0b4 · Modrinth version dZa50kut · Project link unavailable Side not labelled

realmrpg_skeletons-1.1.0-neoforge-1.21.1.jar SHA-1 769deb829b0299356d02b3c44c2bb91b3b524de7 · Modrinth version x1Blh0Gt · Project link unavailable Side not labelled

reanimal-0.6.0.jar SHA-1 d38d422a383759c26cb2b666635c5e88e023055a · Modrinth version yOEHRyHw · Project link unavailable Side not labelled

ritchiesprojectilelib-2.1.2+mc.1.21.1-neoforge.jar SHA-1 ec2e4996f8bee8714173e603e379fef8a6901765 · Modrinth version hZ6B2Z0x · Project link unavailable Side not labelled

sable-neoforge-1.21.1-1.2.2.jar SHA-1 c5ecd3fcf60a31d84112c708abe29e341b2d1b73 · Modrinth version 3FMsUjO4 · Project link unavailable Side not labelled

Searchables-neoforge-1.21.1-1.0.2.jar SHA-1 5b8a0b43a474c066371b2e16f9bfb88622552a74 · Modrinth version iEE85X0w · Project link unavailable Client only

sliceanddice-forge-4.2.4.jar SHA-1 13d8835813b3851d4818c59ec8f7124e4a826c14 · Modrinth version tyVnEa75 · Project link unavailable Side not labelled

sodium-neoforge-0.6.13+mc1.21.1.jar SHA-1 38af70fa4dc4b2aaac636e92fdba3bedd5a025e1 · Modrinth version Pb3OXVqC · Project link unavailable Client only

sophisticatedbackpacks-1.21.1-3.25.44.1736.jar SHA-1 ae890b8637c3eb90ff815f997977f869cec99f50 · Modrinth version ZMuJ1TI7 · Project link unavailable Side not labelled

sophisticatedcore-1.21.1-1.4.38.1847.jar SHA-1 4787b0cefde178738cf34990f210002616026fdf · Modrinth version FkvJPfcC · Project link unavailable Side not labelled

spudaciousshops-1.10.3-neoforge-1.21.1.jar SHA-1 3390cb6935cc8d0ba642f226cbad454eb8647f0a · Modrinth version e6t9dR2G · Project link unavailable Side not labelled

superbwarfare-0.8.9-hotfix-mc1.21.1-ac758531.jar SHA-1 8fb496be82ba6391b10b9c551cc2a47ae8dd18ac · Modrinth version GtwtgI3B · Project link unavailable Side not labelled

TerraBlender-neoforge-1.21.1-4.1.0.8.jar SHA-1 744394d979b422be560babf9df7a6800ede9ac5b · Modrinth version 6e8GCrLb · Project link unavailable Side not labelled

vista-neoforge-1.21.1-4.3.1.jar SHA-1 cb664c977b6854f7fa180640f1c46b9aa983a4ab · Modrinth version XUyNAmF2 · Project link unavailable Side not labelled

voicechat-neoforge-1.21.1-2.6.17.jar SHA-1 55fc0d529318620bd2ce7a635657014c5c98e189 · Modrinth version 6rT2RWh6 · Project link unavailable Side not labelled

xaerominimap-neoforge-1.21.1-25.3.13.jar SHA-1 06cdb37f394bdbebce94c64644ae4bc21bd98959 · Modrinth version CklXEjmp · Project link unavailable Side not labelled

xaeros-map-server-utils-1.1.0.jar SHA-1 b6f70ed932ac5bde687eb56e3929a89266c9a485 · Modrinth version E7slFfkn · Project link unavailable Side not labelled

xaeroworldmap-neoforge-1.21.1-1.40.16.jar SHA-1 d0865b6153c4d0feaf1551fb5309884ec3568c03 · Modrinth version XwL25au3 · Project link unavailable Side not labelled

zipline-neoforge-1.21.1-1.2.1.jar SHA-1 409e346986929da172975194d00a83877670ec3d · Modrinth version Vuq0V0Pe · Project link unavailable Side not labelled

Pick your setup