Modscraper Modscraper Minecraft
Sandbox in a Vacuum I SiaV logo

Sandbox in a Vacuum I SiaV

Modpack

by remag

A skyblock modpack starting with nothing... literally

Type

Modpack

CurseForge Downloads

10,254

CurseForge ID

1365517

Last Updated

Sep 19, 2026

Description

Overview

Sandbox in a Vacuum is a 1.20.1 skyblock pack where you start with nothing, no little island with a tree, no tree on a single dirt block and no infinitely regenerating block only the void.

This is the third pack in the Sandbox series and the sequel to Volcanic Sandbox.

This pack started development shortly after VS was finished and released so at the time of writting that means this pack has been in development for 16 months (not all of that was active development)

Thanks to my discord server members and dedicated testers SparkOfLife and Liam for helping to make the pack hopefully bug free.

Features

The pack is a unique type of skyblock i'd like to call Voidblock, you start with absolutely nothing and need to literally grab dust out of the air with your bare hands to work towards your first block the Void Block.

The pack also has a good selection of tech mods such as Mekanism, Powah, Botania and AE2.

This pack does NOT have create, create is not in any way a bad mod its just overused in packs where it isnt really needed and in Volcanic Sandbox i feel like i used it too much since it felt like the obvious choice but in this pack, and future ones, create will only be used if necessary.

Quests

In Sandbox in a Vacuum you will progress though 6 main chapters, split into a few parts each plus 6 end-game chapters and a final chapter to wrap everything up at the end so like 12.5 chapters in total.

Each of the main chapters is made up of 2-3 parts to keep each questline enjoyable and not too long.

The end-game chapters are long and grindy, they will take a while but just because you're not completing quests doesn't mean you're not progressing.

And finally after all the grind theres a final chapter to bring everything together and set-up for the next pack, CcUiARgpqGkhwqt

Story

Incase you didn't play Volcanic Sandbox here's a recap of the story from that pack, you don't need to play Volcanic Sandbox to enjoy this pack.

 

After launching your rocket on track to the moon you start to relax as you start flying towards the moon.

But in a horrible turn of fate you hear a warning blare out of the cockpit speaker.

"Main Engine Failure, Shutting Down All Engines"

Realising you have no way out of the situation you have found yourself in you decide to press the emergency stasis button.

As the temperature drops you close your eyes for the final time before being frozen and left to drift through space in your broken rocket.

 

This story is continued (loosely) in Sandbox in a Vacuum as you may be able to tell by the theme of this page.

Apex Hosting Banner

If you want to play the pack with a friend on a server then you can use a server from Apex Hosting, just click my banner above and use promo code APEX25 to get 25% off your first month of hosting and by renting a server you help support me to make more packs like this one.

Content Creators

↓ If Content Creators play the pack their videos will be listed here ↓

 

CyberFuelStudios:

If you want some of the assets i made for the pack, such as logos and the pixel art constellations heres a folder of these assets on my discord server below!

Discord

And of course theres a discord server, if you absolutely cant figure out a quest or find an issue with the pack click the banner above to join the discord!

 

Compatibility

Mod Loaders

Forge

Game Versions

1.20.1

Recommended Gear

Affiliate

Hardware and extras that pair well with this modpack.

As an Amazon Associate I earn from qualifying purchases.

Screenshots

Similar Modpacks

Contained Mods (143)

Just Enough Items (JEI)

Just Enough Items (JEI)

View Items and Recipes

Mod 730,225,137
Cloth Config API (Fabric/Forge/NeoForge)

Cloth Config API (Fabric/Forge/NeoForge)

Config Screen API for Minecraft

Mod 571,574,320
Mouse Tweaks

Mouse Tweaks

Enhances inventory management by adding various functions to the mouse buttons.

Mod 550,701,355
AppleSkin

AppleSkin

Adds some useful information about food/hunger to the HUD

Mod 521,256,708
Architectury API

Architectury API

An intermediary api aimed to ease developing multiplatform mods.

Mod 462,172,323
Controlling

Controlling

Adds a search bar to the Key-Bindings menu

Mod 443,345,408
Bookshelf

Bookshelf

An open source library for other mods!

Mod 427,308,788 1.5M this week
JourneyMap

JourneyMap

Real-time map used for mapping in-game or your browser as you explore.

Mod 373,506,467 433.6K this week
Jade 🔍

Jade 🔍

Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Mod 357,598,413
Curios API (Forge/NeoForge)

Curios API (Forge/NeoForge)

A flexible and expandable accessory/equipment API for users and developers.

Mod 354,546,000 1.1M this week
Patchouli

Patchouli

Accessible, Data-Driven, Dependency-Free Documentation for Minecraft Modders and Pack Makers

Mod 343,985,646 524.3K this week
Balm

Balm

Abstraction Layer for Multi-Loader Mods

Mod 333,625,699 242.2K this week
Moonlight Lib

Moonlight Lib

Forge and Fabric lightweight library with utilities such as custom Villagers AI, data driven trades, global datapack, cu...

Mod 303,101,829 3.1M this week
FancyMenu

FancyMenu

Customize Minecraft's menus with ease!

Mod 301,942,789
Konkrete

Konkrete

Just another boring library mod.

Mod 296,256,084
Sophisticated Backpacks

Sophisticated Backpacks

Yet another backpack mod this time with backpack you can place in world, color in different color combinations, upgrade...

Mod 275,761,675 932.6K this week
Kotlin for Forge

Kotlin for Forge

Adds a Kotlin language loader and provides some optional utilities.

Mod 265,981,161
Polymorph (Fabric/Forge/Quilt)

Polymorph (Fabric/Forge/Quilt)

No more recipe conflicts! Adds an option to choose the crafting result if more than one is available.

Mod 259,188,693 477.2K this week
FTB Library (NeoForge)

FTB Library (NeoForge)

Common code for all GUI stuff in FTB Mods

Mod 254,075,531 1.4M this week
Sophisticated Core

Sophisticated Core

Library mod for Sophisticated mods

Mod 243,835,975 2.2M this week
Storage Drawers

Storage Drawers

Interactive compartment storage for your workshops.

Mod 242,804,087 448K this week
FTB Quests (NeoForge)

FTB Quests (NeoForge)

Questing Mod by FTB

Mod 231,316,236 1.1M this week
Applied Energistics 2

Applied Energistics 2

A Mod about Matter, Energy and using them to conquer the world..

Mod 231,197,111 687.1K this week
FTB Teams (NeoForge)

FTB Teams (NeoForge)

Library for mods that can utilize team progression

Mod 226,849,004 1.2M this week
SuperMartijn642's Config Lib

SuperMartijn642's Config Lib

Config Lib makes dealing with config files just a bit easier.

Mod 225,326,391 192.2K this week
Iron Chests

Iron Chests

Iron Chest mod

Mod 225,057,103 298.1K this week
Searchables

Searchables

Searchables is a library mod that adds helper methods that allow for searching and filtering elements based on component...

Mod 222,954,243
CoFH Core

CoFH Core

Contains Core Functionality for all Team CoFH mods. Also does some really cool stuff on its own!

Mod 214,572,495 271.1K this week
Melody

Melody

OpenAL-based library mod for playing background music.

Mod 213,291,968 86.9K this week
SuperMartijn642's Core Lib

SuperMartijn642's Core Lib

SuperMartijn642's Core Lib adds lots of basic implementations that allow for similar code between different Minecraft ve...

Mod 212,282,355 574.7K this week
TerraBlender (Forge)

TerraBlender (Forge)

A library mod for adding biomes in a simple and compatible manner!

Mod 206,311,674
Rhino

Rhino

A fork of Mozilla's Rhino library, modified for use in mods

Mod 203,294,576 379.2K this week
CodeChicken Lib 1.8.+

CodeChicken Lib 1.8.+

Contains various tools to make modding easier.

Mod 199,377,206 477.5K this week
Immersive Engineering

Immersive Engineering

A retro-futuristic tech mod!

Mod 198,412,732 425.6K this week
KubeJS

KubeJS

Edit recipes, add new custom items, script world events, all in JavaScript!

Mod 195,014,031 441.7K this week
Fast Leaf Decay

Fast Leaf Decay

Makes leaves decay faster when a tree is cut down.

Mod 194,608,133 511.2K this week
Item Filters

Item Filters

Item Filters is a library mod that is used by mods like FTB Quests. It adds several filter items that let you precisely...

Mod 191,906,182 470.9K this week
Crafting Tweaks

Crafting Tweaks

Allows you to rotate, balance or clear crafting grids by the press of a button.

Mod 190,684,233 319.4K this week
McJtyLib

McJtyLib

Companion mod for all mods by McJty (RFTools, XNet, Deep Resonance, Not Enough Wands, SignTastic, ...))

Mod 189,188,773 441.1K this week
Mekanism

Mekanism

High-tech machinery, powerful energy generation, fancy gadgets and more. Now on Curse!

Mod 183,211,864 433.8K this week
Cucumber Library

Cucumber Library

A library of shared code and functionality used by my mods.

Mod 179,590,701 516.4K this week
Thermal Foundation

Thermal Foundation

The Foundation of a Thermally Expanding World!

Mod 177,333,996 186.2K this week
Botania

Botania

An innovative natural magic themed tech mod

Mod 176,347,148 174.8K this week
Thermal Expansion

Thermal Expansion

Expanding Minecraft Thermally! A server-friendly and content-rich blend of magic and technology!

Mod 162,622,829 169.5K this week
Mekanism Generators

Mekanism Generators

Advanced energy generation for Mekanism.

Mod 161,516,652 401K this week
Cyclops Core

Cyclops Core

Library mod for EvilCraft, Integrated Dynamics and others.

Mod 161,408,228 488.6K this week
Mystical Agriculture

Mystical Agriculture

Adds resource crops for more than 130+ vanilla & modded materials!

Mod 150,422,408 417.6K this week
FTB XMod Compat

FTB XMod Compat

Official multi-mod integrations support for the FTB Mods

Mod 137,530,227 1M this week
oωo (owo-lib)

oωo (owo-lib)

A general utility, GUI and config library for modding on Fabric and Quilt

Mod 135,112,182
Ender IO

Ender IO

Ender IO

Mod 129,838,362 363.6K this week
FTB Ultimine (Forge)

FTB Ultimine (Forge)

Harvest multiple blocks at once

Mod 120,910,607 628.4K this week
Mystical Agradditions

Mystical Agradditions

Adds tier 6 crops, Tinkers' support, Paxels and more to Mystical Agriculture!

Mod 119,064,819 343.2K this week
Athena

Athena

A crossplatform (Forge/Fabric) solution to connected block textures for 1.19.4+

Mod 118,114,855 834.3K this week
Trash Cans

Trash Cans

Trash Cans adds trash cans which can be used to void items, liquids, and energy!

Mod 112,387,610 512.3K this week
Brandon's Core

Brandon's Core

This is the core mod that will be used by most of my mods from now on

Mod 110,397,583 237.2K this week
Draconic Evolution

Draconic Evolution

Draconic Evolution is a mod that adds some extremely expensive high tier items to the game.

Mod 109,937,964 249.8K this week
Iron Furnaces

Iron Furnaces

Inspired by cpw's Iron Chests, this mod introduces a variety of new furnaces to the game.

Mod 109,187,541 225.4K this week
Silent Lib (silentlib)

Silent Lib (silentlib)

Library to make writing and maintaining mods easier.

Mod 108,602,775 277.3K this week
GraveStone Mod

GraveStone Mod

Places a gravestone with your inventory items inside when you die

Mod 106,197,334
Compact Machines

Compact Machines

Adds one simple game mechanic: Small rooms inside of blocks. It basically gives you the ability to build your contraptio...

Mod 100,239,219 252.3K this week
Construction Wand

Construction Wand

Construction Wands make building easier! (A new take on the Builder's Wand)

Mod 96,557,157 118.7K this week
Inventory Sorter

Inventory Sorter

Simple inventory sorting tweaks

Mod 91,212,306 305.1K this week
Just Zoom

Just Zoom

Lots of new features and improvements for the Spyglass, plus a standalone zooming mode!

Mod 89,660,022 352.3K this week
Pipez

Pipez

Simple and efficient pipes

Mod 87,667,644 388.5K this week
Cyclic

Cyclic

Tools, Machines, Gear, potions, villagers, fully configurable

Mod 85,766,036 103.8K this week
LibX

LibX

LibX is a library mod with a lot of code that is shared between mods.

Mod 84,947,416 172K this week
RFTools Base

RFTools Base

RFTools Base: base mod for all McJty tech mods

Mod 82,831,612 280.2K this week
PneumaticCraft: Repressurized

PneumaticCraft: Repressurized

Doing cool stuff with pressurized air

Mod 82,435,379 267.8K this week
EMI

EMI

Featureful and accessible modern item and recipe viewer with JEI compatibility

Mod 81,930,867
Applied Energistics 2 Wireless Terminals

Applied Energistics 2 Wireless Terminals

An addon for Applied Energistics 2 that adds wireless versions of several Terminals

Mod 80,685,344 388.5K this week
ProjectE

ProjectE

Equivalent Exchange 2 (EE2) for modern Minecraft versions.

Mod 80,421,644 167.9K this week
JamLib

JamLib

The platform-agnostic, Architectury based library used in all of JamCoreModding's mods

Mod 79,368,063 26.3K this week
Tom's Simple Storage Mod

Tom's Simple Storage Mod

Simple vanilla style storage mod

Mod 77,306,819
RightClickHarvest

RightClickHarvest

Allows you to harvest crops by right clicking

Mod 77,030,896 59.9K this week
Botany Pots

Botany Pots

Adds pots that you can use to grow crops!

Mod 76,350,248 211.9K this week
Almost Unified

Almost Unified

Unify all resources.

Mod 73,655,611 384.2K this week
Neruina - Ticking Entity Fixer

Neruina - Ticking Entity Fixer

A Mod that prevents ticking-related crashes from bricking worlds

Mod 72,155,696 56.4K this week
RFTools Utility

RFTools Utility

General RFTools blocks that don't fit in a more specific category

Mod 69,670,125 241.8K this week
Powah! (Rearchitected)

Powah! (Rearchitected)

A tech mod that adds various ways to generate, store and transmit Energy.

Mod 68,523,841 397.2K this week
Simple Discord Rich Presence (Forge /  Fabric)

Simple Discord Rich Presence (Forge / Fabric)

Simple Discord Rich Presence

Mod 66,654,909 248K this week
Simple Magnets

Simple Magnets

Simple Magnets adds Magnets that pickup items around the player!

Mod 66,076,802 300.7K this week
Forgiving Void

Forgiving Void

Makes the void hate you a little less (and vice-versa). Fall down and come back out on top.

Mod 63,040,957 50.5K this week
HammerLib

HammerLib

Library used by all of DragonForge team's mods.

Mod 59,228,039 97.8K this week
MEGA Cells

MEGA Cells

ME Greater Accumulation: For when kilobytes just won't do.

Mod 59,077,011 315K this week
LootJS: KubeJS Addon

LootJS: KubeJS Addon

Add functionality for packdevs to modify global loot modifications through KubeJS

Mod 58,839,797 34.6K this week
Silent Gear

Silent Gear

Upgradeable tools, weapons, and armor. Custom materials system!

Mod 56,625,127 195.5K this week
Botany Trees

Botany Trees

Allows you to grow trees in small pots.

Mod 55,075,171 187.1K this week
Mystical Customization

Mystical Customization

Add and edit crops in Mystical Agriculture!

Mod 49,893,939 217.2K this week
Light Overlay (Rift/Forge/Fabric)

Light Overlay (Rift/Forge/Fabric)

A simple mod to provide users with NEI-like light level overlay.

Mod 46,958,621 79.6K this week
Extended Crafting

Extended Crafting

Adds some new ways to craft items, as well as extra crafting items and utilities.

Mod 46,833,272 90.1K this week
GuideME

GuideME

A guidebook toolkit for mods and modpack makers alike with comfortable markdown formatting, and live 3d scenes!

Mod 44,368,023 476.4K this week
Measurements

Measurements

Allows measuring distance using a tape measure.

Mod 44,282,396 271.6K this week
FLIB

FLIB

FutureLIBrary mod to speed up porting and developing new content

Mod 41,804,761 163.7K this week
JourneyMap Integration

JourneyMap Integration

Adds some mod integrations for our favorite map mod

Mod 41,197,530 96.3K this week
Sawmill

Sawmill

Ultimate Woodcutter. As it was intented, Compatible with ANY Mod, automatically. Includes Carpenter Villager

Mod 39,885,694 301.5K this week
BaguetteLib

BaguetteLib

A simple but powerful event library that gives mod developers the control they actually need.

Mod 39,075,855 282.3K this week
Colossal Chests

Colossal Chests

For when regular chests are too small

Mod 37,955,080 50.8K this week
AE2 Things [Forge]

AE2 Things [Forge]

Introduces a new Cell type, advanced inscriber and crystal growth chamber

Mod 37,104,225 160.6K this week
Just Enough Mekanism Multiblocks

Just Enough Mekanism Multiblocks

Add JEI page for calculate mekanism multiblock cost

Mod 33,096,792 230.1K this week
Ex Compressum

Ex Compressum

Ex Nihilo Addon that reduces grind by adding compressed hammers and automation tools.

Mod 31,633,540 24K this week
Time in a bottle [FORGE\NEOFORGE\FABRIC]

Time in a bottle [FORGE\NEOFORGE\FABRIC]

A fork of Time in a bottle standalone

Mod 29,750,036 201.1K this week
Mystical Agriculture Tiered Crystals

Mystical Agriculture Tiered Crystals

Adds Tiered Crystals to Mystical Agriculture.

Mod 27,124,035 115.7K this week
Chisel Reborn [Forge/Fabric/NeoForge]

Chisel Reborn [Forge/Fabric/NeoForge]

Adds New Blocks!

Mod 26,433,062 159.8K this week
Skyblock Builder

Skyblock Builder

Let you create a custom skyblock island via config

Mod 23,198,185 77.2K this week
Custom Starter Gear

Custom Starter Gear

Gives you full control over what items players start the game with.

Mod 23,084,636 41.6K this week
Squat Grow (Shift / Twerk to grow plants)

Squat Grow (Shift / Twerk to grow plants)

Squat for growth (Shift / Twerk to grow plants)

Mod 20,831,846 116.3K this week
Cryonic Config

Cryonic Config

Chill Minimal Config API

Mod 20,798,377 165.5K this week
Just Enough Immersive Multiblocks

Just Enough Immersive Multiblocks

Immersive Engineering addon that adds JEI support for multiblocks.

Mod 20,129,923 126.6K this week
BucketLib

BucketLib

Library mod for custom buckets (Forge, NeoForge, Fabric, Quilt)

Mod 14,350,576 49.1K this week
Creeper Confetti

Creeper Confetti

No more Kabooms - Now for Fabric and Neoforge

Mod 13,464,646 32.3K this week
Certain Questing Additions

Certain Questing Additions

Small QoL and animation tweaks for FTB Quests.

Mod 12,334,569 14.7K this week
Default World Type [Forge]

Default World Type [Forge]

Change the default world type for creating a new world

Mod 11,827,768 35.5K this week
Ex Nihilo: Sequentia

Ex Nihilo: Sequentia

Create resources from thin air! Well, kind of...you need a tree first.

Mod 11,805,040 19K this week
Experimental Settings Disabler

Experimental Settings Disabler

Disables the experimental world icon, loading, and generation warning settings.

Mod 10,073,114 41.4K this week
Cable Facades

Cable Facades

Facade support for all cables and blocks in the game!

Mod 9,747,198 120.3K this week
Borderless Window

Borderless Window

Forge mod which replaces the standard Minecraft fullscreen with a borderless fullscreen window

Mod 9,422,593 128.3K this week
Caged Mobs

Caged Mobs

Tired of chasing mobs? Imprison all those pesky mobs in cages and easily collect their drops!

Mod 8,477,154 13.1K this week
Gravestone x Curios API Compat

Gravestone x Curios API Compat

Adds compatibility between Gravestone mod and Curios API

Mod 7,251,011 9.6K this week
KubeJS Botania

KubeJS Botania

KubeJS integration for Botania

Mod 7,045,896 37.4K this week
Wooden Bucket

Wooden Bucket

A Wooden Bucket for all bucketable fluids, entities & blocks! (Forge, NeoForge, Fabric, Quilt)

Mod 5,324,980 16.6K this week
Team ProjectE

Team ProjectE

Sync your ProjectE knowledge and EMC with your friends!

Mod 4,748,214 12.2K this week
KubeJS Powah

KubeJS Powah

Lets you modify the recipes of the Powah mod

Mod 4,718,446 31.5K this week
Crafting Station: JEI Edition

Crafting Station: JEI Edition

Crafting Station - now with JEI + Polymorph support

Mod 4,478,402 11.4K this week
BBL Utility

BBL Utility

Various useful items and blocks including block breakers and placers. fluid placers and collectors and resource generato...

Mod 3,129,937 7.9K this week
BBL Strainers

BBL Strainers

Strainers that can be used to find items in water and other blocks

Mod 2,996,910 32.2K this week
NovaCore

NovaCore

Library mod for NovaMachina Mods

Mod 2,467,871 12.3K this week
AE2 MEGA Things

AE2 MEGA Things

AE2 MEGA Things adds DISK Cells (1k to 256M) with no type restrictions, supporting items, fluids, and Chemicals.

Mod 2,354,942 21.3K this week
KubeJS Botany Pots

KubeJS Botany Pots

A KubeJS addon that allows you to create crops, soils, and fertilizers for Botany Pots

Mod 2,090,798 9.3K this week
Brick Hopper

Brick Hopper

Adds a Brick Hopper to the game. (Forge, NeoForge, Fabric, Quilt)

Mod 1,478,999 1.7K this week
SilentGear Compat

SilentGear Compat

Adding SilentGear compatability for several mods and new unique materials!

Mod 1,464,899 3.7K this week
Survival Fire Sticks (Wooden Flint and Steel)

Survival Fire Sticks (Wooden Flint and Steel)

An early game alternative to Flint and Steel

Mod 912,152 3.3K this week
BotaniaTubes

BotaniaTubes

You can finally refill your petal apothecary without trouble

Mod 744,690 7.6K this week
Infinite source of water

Infinite source of water

A mod that generates a water source in a single block, with different tiers/speeds.

Mod 381,870 779 this week
Decursio Stages

Decursio Stages

Gating items, structures, mobs, blocks, dimensions and containers to game stages through JSON files.

Mod 345,370 1.5K this week
Haven Animal Seeds / Crops / Plants

Haven Animal Seeds / Crops / Plants

A mod that adds seeds that will grow into animals.

Mod 324,069 2.6K this week
PNC: Extra PCBs

PNC: Extra PCBs

A simple PNC add-on that adds more PCBs

Mod 146,174 714 this week
Simply Steel Continued

Simply Steel Continued

Adds steel and associated armor, tools, blocks, and other miscellaneous things.

Mod 95,817 368 this week
Cobble Gen Haters

Cobble Gen Haters

Water and Lava go hand in hand. No more pesky cobble/stone generation.

Mod 84,863 170 this week
Campfire Fix

Campfire Fix

Fixes Campfires. Why are they lit on placement? Makes no sense right?

Mod 84,245 99 this week
Remag's Compressed Cobblestone

Remag's Compressed Cobblestone

Super compressed cobblestone

Mod 19,704 74 this week
Void Block

Void Block

A new type of skyblock where you start with literally nothing

Mod 10,999 58 this week
Block Generators 2

Block Generators 2

A block that generates other blocks on top of it

Mod 8,804 52 this week
Sandbox Multiblocks | SBMB

Sandbox Multiblocks | SBMB

A Simple Multiblock Crafting System

Mod 8,714 41 this week

External Resources