NTM General Config: Features, Threading and Game Modes

NTM stores all of its primary configuration in a single Forge-style config file located at config/HBM_NTM.cfg inside your Minecraft instance folder. This file is divided into named categories (e.g. 01_general, 528, LESS BULLSHIT MODE) and is created automatically on first launch with every option set to its default value. Options are numerically prefixed so they appear in a predictable order inside tools like the Forge in-game config editor. You can apply changes at runtime — without restarting the game or server — by running /ntmreload as a server operator. Some options (particularly those that affect world generation or mod loading order) require a full restart to take effect.

The config file is located at <instance>/config/HBM_NTM.cfg. Run /ntmreload in-game to hot-reload recipes and most runtime options. World-gen and dimension-registration changes always require a full restart.

Network & Threading

Options in the 01_general category that control how NTM handles server-side packet processing.

0.00 — crashOnThermos

Field	Value
Key	`0.00_crashOnThermos`
Type	Boolean
Default	`true`

When true, NTM will refuse to load on a Thermos server and throw a deliberate crash. Thermos rewrites tile-entity handling in a way that silently breaks a large portion of the mod. Only set this to false if you fully understand the tileentities.yml file and the extent to which Thermos cripples the mod’s functionality.

0.01 — enablePacketThreading

Field	Value
Key	`0.01_enablePacketThreading`
Type	Boolean
Default	`true`

Creates a dedicated thread pool for processing NTM packets on the server, which can noticeably reduce main-thread stutter on busy multiplayer servers. Disable if you observe anomalous crashes related to memory or network connections that disappear when this option is off.

0.02 — packetThreadingCoreCount

Field	Value
Key	`0.02_packetThreadingCoreCount`
Type	Integer
Default	`1`

Number of always-alive core threads in the packet thread pool. The developers recommend keeping this at 1 for most servers.

0.03 — packetThreadingMaxCount

Field	Value
Key	`0.03_packetThreadingMaxCount`
Type	Integer
Default	`1`

Maximum number of threads the packet pool may scale up to. Must be greater than or equal to 0.02_packetThreadingCoreCount.

0.04 — packetThreadingErrorBypass

Field	Value
Key	`0.04_packetThreadingErrorBypass`
Type	Boolean
Default	`false`

Forces most packet threading errors to be silently swallowed rather than propagated. Only enable this if a developer directs you to, or if you fully understand the implications of suppressing threading errors.

0.05 — enableServerRecipeSync

Field	Value
Key	`0.05_enableServerRecipeSync`
Type	Boolean
Default	`false`

When true, any machine recipes customised via JSON config files are synced to connecting clients automatically. Required if clients need to display or pre-validate custom recipes. See the JSON Recipes page for details.

Feature Toggles

The bulk of gameplay-affecting toggles live in keys 1.00 through 1.44 of the 01_general category. These control everything from debug mode to skyboxes, and most can be hot-reloaded.

1.00 — enableDebugMode

Field	Value
Key	`1.00_enableDebugMode`
Type	Boolean
Default	`false`

Enables debug rendering and logging throughout the mod. Produces significant log spam; only useful when diagnosing issues or developing.

1.01 — enableMyceliumSpread

Field	Value
Key	`1.01_enableMyceliumSpread`
Type	Boolean
Default	`false`

Allows NTM’s glowing mycelium variant to spread to adjacent blocks. Disabled by default because uncontrolled spread can be disruptive in survival worlds.

1.02 — enablePlutoniumNetherOre

Field	Value
Key	`1.02_enablePlutoniumNetherOre`
Type	Boolean
Default	`false`

Enables plutonium ore generation in the Nether. The spawn rate is controlled separately by 2.N05_plutoniumSpawnrate in WorldConfig.

1.03 — enableDungeonSpawn

Field	Value
Key	`1.03_enableDungeonSpawn`
Type	String (`true` / `false` / `flag`)
Default	`flag`

Controls whether NTM structures and dungeons spawn. true forces them on, false forces them off, and flag (the default) defers to the Generate Structures world flag set at world creation.

1.04 — enableOresInModdedDimensions

Field	Value
Key	`1.04_enableOresInModdedDimensions`
Type	Boolean
Default	`true`

Allows NTM ores to generate in dimensions added by other mods. Disable if a modpack’s dimension has its own ore-generation system and you want to avoid overlap.

1.05 — enableLandmineSpawn

Field	Value
Key	`1.05_enableLandmineSpawn`
Type	Boolean
Default	`true`

Master toggle for landmine world generation. Frequency is controlled by 4.14_landmineSpawn in WorldConfig.

1.06 — enableRadHotspotSpawn

Field	Value
Key	`1.06_enableRadHotspotSpawn`
Type	Boolean
Default	`true`

Master toggle for radiation hotspot generation. Frequency is controlled by 4.15_radHotspotSpawn in WorldConfig.

1.14 — enableBomberShortMode

Field	Value
Key	`1.14_enableBomberShortMode`
Type	Boolean
Default	`false`

Causes NTM bomber aircraft to spawn closer to their target. Useful on servers where render distance is limited and planes need to be visible to players before they arrive.

1.15 — enableVaultSpawn

Field	Value
Key	`1.15_enableVaultSpawn`
Type	Boolean
Default	`true`

Master toggle for locked safe / vault world generation. Frequency is controlled by 4.16_vaultSpawn in WorldConfig.

1.17 — enableCataclysm

Field	Value
Key	`1.17_enableCataclysm`
Type	Boolean
Default	`false`

When enabled, a satellite falls from the sky every time any mob dies anywhere in the world. Intended as a challenge/chaos mode; not recommended for normal survival play.

1.18 — enableExtendedLogging

Field	Value
Key	`1.18_enableExtendedLogging`
Type	Boolean
Default	`false`

Logs every use of the detonator, every nuclear explosion, every missile launch, and every grenade throw to the server log. Useful for auditing on public servers.

1.20 — enableGuns

Field	Value
Key	`1.20_enableGuns`
Type	Boolean
Default	`true`

Allows NTM’s new-system firearms to be fired. Set to false to prevent players from using guns while keeping all other mod content available.

1.21 — enableVirus

Field	Value
Key	`1.21_enableVirus`
Type	Boolean
Default	`false`

Allows virus blocks to spread to adjacent blocks. Disabled by default due to the potential for uncontrolled world corruption.

1.22 — enableCrosshairs

Field	Value
Key	`1.22_enableCrosshairs`
Type	Boolean
Default	`true`

Shows NTM’s custom HUD crosshairs when holding a gun. Pure client-side cosmetic; disable if you prefer vanilla crosshairs or another mod’s overlay.

1.25 — enableRenderDistCheck

Field	Value
Key	`1.25_enableRenderDistCheck`
Type	Boolean
Default	`true`

Detects and corrects render distances above 16 chunks (which can cause visual and performance issues without OptiFine installed) and automatically lowers them to a safe value.

1.28 — enableSilentCompStackErrors

Field	Value
Key	`1.28_enableSilentCompStackErrors`
Type	Boolean
Default	`false`

Suppresses log spam caused by unregistered items being used in ComparableStack instances. Enable if your log is flooded with these messages from a third-party addon.

1.31 — enableSkyboxes

Field	Value
Key	`1.31_enableSkyboxes`
Type	Boolean
Default	`true`

Enables NTM’s custom skybox rendering. Disable if it conflicts with another mod’s sky effects.

1.32 — enableImpactWorldProvider

Field	Value
Key	`1.32_enableImpactWorldProvider`
Type	Boolean
Default	`true`

Registers NTM’s custom world provider that adjusts sky colour and lighting to simulate post-nuclear-impact atmospheric effects.

1.33 — enableStatReRegistering

Field	Value
Key	`1.33_enableStatReRegistering`
Type	Boolean
Default	`true`

Re-registers item crafting, breaking, and usage statistics for NTM items to work around a Forge bug where modded items fail to appear in the statistics screen.

1.34 — enableKeybindOverlap

Field	Value
Key	`1.34_enableKeybindOverlap`
Type	Boolean
Default	`true`

Handles NTM keybinds that would otherwise be silently ignored because they overlap with another registered keybind.

1.35 — enableFluidContainerCompat

Field	Value
Key	`1.35_enableFluidContainerCompat`
Type	Boolean
Default	`true`

Ore-dictionaries NTM fluid containers so they are interchangeable with other mods’ containers in recipes. Also makes TrainCraft’s diesel a valid substitute for NTM diesel canisters.

1.36 — enableMOTD

Field	Value
Key	`1.36_enableMOTD`
Type	Boolean
Default	`true`

Shows the “Loaded mod!” chat message and any available update notifications when a player joins a world.

1.37 — enableGuideBook

Field	Value
Key	`1.37_enableGuideBook`
Type	Boolean
Default	`true`

Gives new players the NTM guide book the first time they join the world.

1.39 — enableSoundExtension

Field	Value
Key	`1.39_enableSoundExtension`
Type	Boolean
Default	`true`

Increases the maximum number of simultaneous sounds beyond Minecraft’s default 28. The channel count is configured by 1.41_normalSoundChannels.

1.40 — enableMekanismChanges

Field	Value
Key	`1.40_enableMekanismChanges`
Type	Boolean
Default	`true`

Modifies some of Mekanism’s recipes to integrate with NTM’s material progression. Disable if you want unmodified Mekanism recipes.

1.41 — normalSoundChannels

Field	Value
Key	`1.41_normalSoundChannels`
Type	Integer
Default	`100`

The number of sound channels to allocate when 1.39_enableSoundExtension is enabled. Values below 28 or above 200 can cause buggy sound behaviour and may affect other mods’ audio. The safe range is 28–200.

1.42 — preferredOutputMod

Field	Value
Key	`1.42_preferredOutputMod`
Type	String List
Default	`["hbm"]`

A list of mod IDs preferred as output sources when machines auto-generate recipes (currently used by the Shredder). NTM’s own mod ID (hbm) is the default.

1.43 — enableLoadScreenReplacement

Field	Value
Key	`1.43_enableLoadScreenReplacement`
Type	Boolean
Default	`true`

Replaces the vanilla loading screen with NTM’s “tip of the day” screen. May conflict with other mods that also attempt to replace the loading screen.

1.44 — enableMachineGravity

Field	Value
Key	`1.44_enableMachineGravity`
Type	Boolean
Default	`false`

Requires large multi-block machines to have a structurally valid foundation. If a machine lacks proper support, it tilts and breaks. This option operates independently from the 528 Mode version of the same mechanic (X528_enable528MachineGravity).

Expensive Mode

1.99 — enableExpensiveMode

Field	Value
Key	`1.99_enableExpensiveMode`
Type	Boolean
Default	`false`

Enables “Expensive Mode”, which significantly increases the resource cost of many recipes across the mod. The config description reads simply “It does what the name implies.” Note that Expensive Mode is automatically disabled if the Precision Assembly Recipe set has been modified by a JSON override (PrecAssRecipes.INSTANCE.modified == true), ensuring JSON-customised servers are unaffected. You can check the effective state via the GeneralConfig.trueExp() method.

Mode 528

Mode 528 is an alternate hardcore gameplay configuration that makes the world significantly more hostile and resource-scarce. It changes boiler behaviour, adds hazardous world spawns, restricts certain machines, burns players in the Nether, and alters several recipes. All 528 sub-options require enable528Mode to be true before they take effect; the game forces the remaining sub-flags off if the master toggle is disabled.

528 Mode is explicitly marked CAUTION in the config file. It is not a casual difficulty option. When 528 Mode is active, Less Bullshit Mode (LBSM) is forcibly disabled.

enable528Mode (master toggle)

Field	Value
Key	`enable528Mode`
Category	`528`
Type	Boolean
Default	`false`

The master switch for all 528 Mode behaviour. Must be true for the sub-options below to have any effect.

X528_forceReasimBoilers

Field	Value
Key	`X528_forceReasimBoilers`
Category	`528`
Type	Boolean
Default	`true`

Locks the RBMK boiler dial to the ReaSim boiler type, preventing the use of non-ReaSim boiler columns and enforcing the use of dedicated steam inlets and outlets.

X528_enableColtanDeposit

Field	Value
Key	`X528_enableColtanDeposit`
Category	`528`
Type	Boolean
Default	`true`

Spawns a large coltan deposit at a single random location in the world. Coltan is a critical resource in 528 Mode, and centralising it forces players to explore or contest the deposit.

X528_enableColtanSpawning

Field	Value
Key	`X528_enableColtanSpawning`
Category	`528`
Type	Boolean
Default	`false`

Enables random coltan ore generation spread across the world (as opposed to the single deposit). This is separate from the deposit option. The vein frequency is set by X528_oreColtanFrequency.

X528_enableBosniaSimulator

Field	Value
Key	`X528_enableBosniaSimulator`
Category	`528`
Type	Boolean
Default	`true`

Causes anti-tank mines to spawn across the world. Pairs with the general landmine system but uses a separate spawn path tuned for 528 Mode’s hostile overworld.

X528_enable528NetherBurn

Field	Value
Key	`X528_enable528NetherBurn`
Category	`528`
Type	Boolean
Default	`true`

Players take constant fire damage while in the Nether when this is enabled.

X528_enable528PressurizedRecipes

Field	Value
Key	`X528_enable528PressurizedRecipes`
Category	`528`
Type	Boolean
Default	`true`

Changes certain recipes to require pressurized fluid input rather than standard fluid input.

X528_enable528ExplosiveEnergistics

Field	Value
Key	`X528_enable528ExplosiveEnergistics`
Category	`528`
Type	Boolean
Default	`true`

Renders Applied Energistics 2 (AE2) unusable. This is intentional — 528 Mode targets a more manual, logistically demanding experience where ME networks are considered out of scope.

X528_enable528MachineGravity

Field	Value
Key	`X528_enable528MachineGravity`
Category	`528`
Type	Boolean
Default	`true`

Requires most large machines to have a valid foundation in 528 Mode. Machines without one will tilt and break. Works independently from the standalone 1.44_enableMachineGravity option.

X528_oreColtanFrequency

Field	Value
Key	`X528_oreColtanFrequency`
Category	`528`
Type	Integer
Default	`2`

Expected number of random coltan ore veins per chunk when X528_enableColtanSpawning is active. Does not affect deposit generation.

Less Bullshit Mode (LBSM)

Less Bullshit Mode is an optional set of quality-of-life simplifications designed to reduce grind without breaking core NTM progression. It is aimed at casual players and server operators who want a more accessible experience. LBSM is forcibly disabled whenever 528 Mode is active.

LBSM can alter progression in ways that affect recipe balance. It is generally considered server-friendly, but always inform your players before enabling it.

enableLessBullshitMode (master toggle)

Field	Value
Key	`enableLessBullshitMode`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`false`

Master toggle for LBSM. Forcibly set to false when 528 Mode is active.

LBSM_fullSchrab

Field	Value
Key	`LBSM_fullSchrab`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Replaces schraranium with full schrabidium ingots in the transmutator output, reducing late-game material grind.

LBSM_shortDecay

Field	Value
Key	`LBSM_shortDecay`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Drastically accelerates nuclear waste disposal drum decay. LBSM decay speed is 60× faster than 528 Mode and 5–12× faster than standard mode.

LBSM_recipeSimpleArmor

Field	Value
Key	`LBSM_recipeSimpleArmor`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Simplifies armor set recipes (starmetal, schrabidium, etc.) to require fewer intermediate materials.

LBSM_recipeSimpleTool

Field	Value
Key	`LBSM_recipeSimpleTool`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Simplifies tool set recipes (starmetal, schrabidium, etc.) in the same way as the armor option.

LBSM_recipeSimpleAlloy

Field	Value
Key	`LBSM_recipeSimpleAlloy`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Adds shortcut blast furnace recipes to make certain alloys cheaper to produce.

LBSM_recipeSimpleChemistry

Field	Value
Key	`LBSM_recipeSimpleChemistry`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Simplifies selected chemical plant recipes to reduce the number of processing steps required.

LBSM_recipeSimpleCentrifuge

Field	Value
Key	`LBSM_recipeSimpleCentrifuge`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Enhances centrifuge output quantities to make rare materials more accessible.

LBSM_recipeUnlockAnvil

Field	Value
Key	`LBSM_recipeUnlockAnvil`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Makes all anvil recipes available from tier 1, removing the tier gate normally required.

LBSM_recipeSimpleCrafting

Field	Value
Key	`LBSM_recipeSimpleCrafting`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Adds crafting table recipes for items that are otherwise uncraftable or excessively expensive. Also makes scorched uranium washable.

LBSM_recipeSimpleMedicine

Field	Value
Key	`LBSM_recipeSimpleMedicine`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Makes medicine recipes (including those requiring bismuth) significantly more affordable.

LBSM_safeCrates

Field	Value
Key	`LBSM_safeCrates`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Prevents crates from becoming radioactive when stored near radioactive materials.

LBSM_safeMEDrives

Field	Value
Key	`LBSM_safeMEDrives`
Category	`LESS BULLSHIT MODE`
Type	Boolean
Default	`true`

Prevents AE2 ME Drives and Portable Cells from becoming radioactive.

LBSM_schrabOreRate

Field	Value
Key	`LBSM_schrabOreRate`
Category	`LESS BULLSHIT MODE`
Type	Integer
Default	`20`

Changes the average amount of uranium ore required to produce one schrabidium ore through nuclear transmutation. Standard mode value is 100; LBSM lowers this to 20 by default, making schrabidium five times more attainable.

Introduction

Core Concepts

Configuration

NTM General Config: Features, Threading and Game Modes

Network & Threading

Feature Toggles

Expensive Mode

Mode 528

Less Bullshit Mode (LBSM)

Build docs developers (and LLMs) love

Introduction

Core Concepts

Configuration

Documentation Index

​Network & Threading

​Feature Toggles

​Expensive Mode

​Mode 528

​Less Bullshit Mode (LBSM)

Build docs developers (and LLMs) love

Network & Threading

Feature Toggles

Expensive Mode

Mode 528

Less Bullshit Mode (LBSM)