Open Prism Launcher → Add Instance → Import from ZIP.
Paste the raw URL to the .mrpack file in this repository (e.g. https://git.reaperofveriod.nl/ReaperOfVeriod/Reaper-s-Sky/raw/branch/main/ReapersSky-1.2.2.mrpack).
Import. Prism downloads all mods, applies configs/shaders/resource pack, and sets the instance up automatically.
(First launch) Allocate 8 GB RAM in Settings → Java → Memory. Requires Java 21.
The multiplayer server reaperofveriod.nl is pre-listed — just hit Multiplayer and join.

Server install (Debian 13) — one link

Run this on the server box (sudo/root; needs internet). It installs Java 21, NeoForge 21.1.248, all 92 server-side mods (sha1-verified), and writes eula.txt + server.properties + an 8 GB run.sh:

curl -sSL https://git.reaperofveriod.nl/ReaperOfVeriod/Reaper-s-Sky/raw/branch/main/server/install.sh | sh

Then start it (keep it running with tmux/screen):

tmux new -s mc
cd ~/reaper-sky-server && ./run.sh

The world generates on first boot — wait for Done (...) and join at reaperofveriod.nl. Full details in server/README.md.

Updating the server's mods (maintainers)

After adding/removing mods in the Prism instance Reaper's Sky - dev, push them to the live server with one command from the repo root:

python3 server/build_mods.py --push

It regenerates server/mods.json, uploads it, then on the server: stop → sync mods (prune stale + download new, sha1-verified) → start, and waits until the log shows Done (...). No git commit needed first. See server/README.md for details, manual options and troubleshooting.

What's inside

Core — Create + Aeronautics foundation

Mod	Notes
Create 6.0.10	Machines, kinetics & contraptions (bundles Flywheel, Ponder, Registrate)
Create Aeronautics 1.3.1	Player-piloted airships & moving contraptions (bundled build)
Sable 2.0.5	Physics/simulation library behind Aeronautics
kotlinforforge	Kotlin runtime for NeoForge
Curios 9.5.1	Wearable accessory slots
geckolib 4.9.2	3D entity animation library
playeranimator 2.0.4	Player animation support
Placebo 9.9.2	Library (required by Apotheosis)
Patchouli 93	In-game guidebook framework

Airships / expansion — Aeronautics addons

Mod	Notes
aeroworks 1.4.2	Advanced airship workshop tools
aeronautics-covers 1.0.1	Extra block covers for ships
aeronautics-dyeable-components 1.0.4	Dyeable ship components
aeronautics-gadgets-and-gizmos 1.1.3	More airship gadgets
aeronautics-portable-engine-liquid-fuel 2.0.0	Liquid-fuel portable engines
aeronautics-propeller-blur 1.0a	Propeller blur effect
create-simulated-thrusters 1.0.1	Simulated thruster blocks
create-the-air-war 4.67	Aerial combat / air war content
deployer 0.1.2	Extra deployer behaviours
simulated-gauges 1.1.0	Gauges for simulated systems
jade-sable-compat 1.3.0	Jade HUD compat for Sable
aero-shadow-fix 2.1.0	Fixes shader ghosting (balloon)

Tech — Create expansion

Mod	Notes
railways 0.3.0-beta.2	Trains & rail transport
create-new-age 1.2.0	Nuclear / advanced power
createbigcannons 5.11.7	Cannons & artillery
createdieselgenerators 1.3.15	Diesel generators
copycats 3.0.6	Copycat block variants
create_connected 1.3.2	Connected textures & bridges
Design-n-Decor 2.2b	Decorative blocks
create_jetpack 5.2.1	Jetpacks
cable_facades 2.1.3	Hide cables/trains under facades
ritchiesprojectilelib 2.1.2	Projectile library (createbigcannons)
Pipez 1.2.31	Item/fluid/energy/gas pipes
Create Slice & Dice 4.3.3	Cooking automation (slicer & sprinkler)
Create: Easy Stone Generators 1.2.5	Passive stone/cobble generation on Create
Create Contraption Terminals 1.4.0	Access Tom's Storage / inventories from contraptions

Storage — Sophisticated set + Tom's

Mod	Notes
Sophisticated Core 1.4.89	Library for the Sophisticated mods
Sophisticated Storage 1.5.91	Tiered, upgradeable storage barrels/chests
Sophisticated Backpacks 3.25.78	Upgradeable wearable backpacks
Sophisticated Storage Create Integration 0.1.21	Sophisticated Storage on Create contraptions
Sophisticated Backpacks Create Integration 0.1.8	Sophisticated Backpacks on Create contraptions
Tom's Simple Storage 2.4.1	Simple linked storage network
Sophisticated Backpacks: Ars Compat 0.3.0	Source/Sourcelink & repair upgrades (LuminaCherry, CF)

Magic

Mod	Notes
Iron's Spells 'n Spellbooks 3.16.3	Spell-casting (uses irons_lib 2.1.0)
Ars Nouveau 5.13.0	Glyph-based spellcrafting & familiars
Create: Ars Nouveau Compat 1.1	Create ↔ Ars Nouveau bridging (Create: Compat Core 1.0)
Sophisticated Backpacks: Ars Compat 0.3.0	Ars Source upgrades for backpacks

Building — Macaw's set + Chisel + Supplementaries

Mod	Notes
Chisel Reborn 2.0.1	Chisel tool & hundreds of block variants
Supplementaries 3.9.1	Building & functional variety (uses Moonlight 3.4.1)
Architect's Palette 1.4.0-beta.5	New block palette
Macaw's Doors 1.1.5	Custom doors
Macaw's Fences & Walls 1.2.1	Fences, walls & hedges
Macaw's Windows 2.4.2	Windows & shutters
Macaw's Bridges 3.1.2	Rope & suspension bridges
Macaw's Stairs 1.0.2	Stair variants
Macaw's Trapdoors 1.1.5	Trapdoor variants
Macaw's Furniture 3.4.1	Furniture & seating
Macaw's Lights & Lamps 1.1.5	Lamps & chandeliers
Macaw's Paths & Pavings 1.1.1	Paths & pavement
Macaw's Paintings 1.1.0	New paintings

Exploration

Mod	Notes
Terralith 2.6.2	95+ new biomes (via lithostitched 1.8.0)
YUNG's Better Strongholds 5.1.3	Overhauled strongholds
YUNG's Better Desert Temples 4.1.5	Overhauled desert temples
YUNG's Better Dungeons 5.1.4	Overhauled dungeons
YungsApi 5.1.7	Library for the YUNG's mods
Explorer's Compass 3.4.0	Find structures
Nature's Compass 3.4.0	Find biomes
Xaero's Minimap 26.4.2	Minimap
Xaero's World Map 1.44.2	Full world map
waystones 21.1.41	Teleport waypoints

Survival / QoL

Mod	Notes
Apotheosis 8.7.0	Affixes & enchanting (Placebo, Apothic Attributes 2.10.1, Apothic Enchanting 1.6.1, Apothic Spawners 1.4.0)
Gravestone 1.0.40	Places a gravestone with your items on death (JamLib 1.3.6)
Right Click Harvest 4.6.1	Harvest crops by right-clicking
carry-on 2.2.6	Carry chests & mobs
JEI 19.44.0.403	Recipe viewer
appleskin 3.0.9	Food/hunger HUD
MouseTweaks 2.26.1	Inventory mouse controls
BetterF3 11.0.3	Customizable F3 debug screen
ClientSort 2.2.2	One-click sort buttons in inventories & chests
Controlling 19.0.5	Searchable keybinds (Searchables 1.0.2)
Jade 15.10.6	"What am I looking at" HUD
balm 21.0.65	Cross-loader library

Food — Farmer's Delight expansion + Create

Mod	Notes
Farmer's Delight 1.3.3	Cooking & farming (foundation)
Expanded Delight 0.1.4	More crops, snacks & recipes
End's Delight 2.6.1	End-themed food & cooking
Create: Confectionery 1.1.3.b	Chocolate & sweets made on Create machinery

Performance

Mod	Notes
Sodium 0.8.12	Rendering performance
MoreCulling 1.0.9	Culls leaf & other block faces (Cloth Config 15.0.140)
lithium 0.15.4	Game logic performance
ferritecore 7.0.3	Memory optimization
ImmediatelyFast 1.6.12	Faster rendering
entityculling 1.10.5	Cull off-screen entities
dynamic-fps 3.11.4	Auto-lower FPS when unfocused
modernfix 5.27.20	Boot & memory fixes
Clumps 19.0.0.1	Group XP orbs
spark 1.10.124	Profiler

Visuals

Mod	Notes
Iris 1.8.14-beta.1	Shader loader
EuphoriaPatcher 1.9.3	Patches Complementary shaders
iris-flywheel-compat 2.3.1	Iris + Flywheel backend compat
3D Skin Layers 1.11.2	3D player/mob skins
Fresh Animations 1.10.4	Animated mobs (resource pack — enable in-game)
Complementary Reimagined r5.8.1	Shaderpack (Euphoria-patched, included)

Key config already applied

Flywheel backend forced to flywheel:indirect — fixes the Create throttle-lever "ghost image" artifact under Iris shaders.
aero-shadow-fix bundled — fixes the white balloon ghost.
Iris is preset to load the included Complementary Reimagined shaderpack.
irisflw replaceCheckerboardTexture = true for correct textures under shaders.

After import

Enable Fresh Animations in Options → Resource Packs (ships alongside 3D Skin Layers).
If shaders look off, verify the Complementary pack is active in Options → Video Settings → Shader Packs.

Crashes & getting help

If the game crashes or something breaks, send us the log on Discord — with it we can usually tell you exactly which mod is at fault.

Where to find the files (Prism Launcher):

Right-click the instance → Folder (or Minecraft folder). This opens the instance directory.
Crash reports are in crash-reports/ — pick the newest crash-...-client.txt.
If there is no crash report (game froze or was closed), grab logs/latest.log instead.

Quick paths by OS (the folder name includes the version you imported):

OS	Instance folder
Windows	`%APPDATA%\PrismLauncher\instances\ReapersSky-...\minecraft\`
Linux	`~/.local/share/PrismLauncher/instances/ReapersSky-.../minecraft/`
macOS	`~/Library/Application Support/PrismLauncher/instances/ReapersSky-.../minecraft/`

When posting on Discord, please include:

The full crash report or latest.log as a file upload (not pasted text)
What you were doing when it happened
Whether it happens in singleplayer too

Server-side issues (everyone affected, or things broken only on the server) are handled by the maintainers — server logs live in ~/reaper-sky-server/logs/latest.log and ~/reaper-sky-server/crash-reports/ on the server box.

Rebuilding the pack (maintainers)

python3 build_mrpack.py regenerates the .mrpack from the dedicated "Reaper's Sky - dev" instance at ~/.local/share/PrismLauncher/instances/Reaper's Sky - dev/.minecraft. Set INSTANCE (and OVERRIDES) at the top of the script to point at a different instance.

Known limitations

Create Aeronautics has known visual issues under Iris; the bundled config/mods resolve the most visible ones (balloon + throttle lever). Occasional artifacts on animated Create instances may still appear.
Shader uniform warnings in the log (_flw_cullData, flw_frustumPlanes) from Veil are cosmetic and do not affect rendering on the indirect backend.