Breaking Changes

• Fixed compatibility with Modern Splash 1.5.0+. Older versions of Modern Splash are no longer supported.

Fixes

• Artillery shells no longer duplicate their cargo when right-clicked repeatedly.
• Fixed missing textures on the airblast and flue gas fluid tanks.
• Corrected the blast furnace's JEI recipe-lookup click area.
• Fixed a crash that could occur near climbable blocks (ladders, cables, etc.).
• Fixed a crash and leftover stray particles when changing dimensions or leaving a world with instanced particles enabled.
• Number displays no longer misrender; a misplaced decimal point is fixed, digits no longer overflow the display, and oversized values now read as all 9s.
• Smoothed out the RBMK crane console's arm movement, which could appear jittery.
• Fixed fluid networks mishandling transfers when multithreaded network updates are enabled.

Changes

• The schrabidium missile is now crafted with an anti-schrabidium cell and a quantum circuit.
• Fuel- and battery-powered F.S.B. armor can now be enchanted.

New Features

• RBMK numitron displays gained per-screen toggles to abbreviate large numbers (e.g. 12.3k) and to pad with leading zeroes, along with a redesigned setup screen.

Breaking Changes

• Advanced Alloy has been retired: its ingot, plate, block, wires, coils, tools and armor can no longer be crafted or obtained, and recipes that previously required it now use steel, titanium, copper or gold instead — existing Advanced Alloy items are marked "(LEGACY)" and can no longer be crafted or repaired
• The standalone Energy Core battery can no longer be crafted
• The original Blast Furnace, along with its Extension and Nuclear (RTG) variants, has been replaced by the new multiblock Blast Furnace and can no longer be crafted
• Removed the Iron, Aluminium, Lead, Cobalt and Tungsten ladders and the Iron Fluid Barrel

Fixes

• Fixed a crash that could occur when using the chainsaw
• Fixed a rendering crash that could occur while chunks were being rebuilt
• Fixed the Electrolyser still showing molten material in its interface after its tank had been emptied
• The RTG's pellet slots now only accept valid radioisotope pellets instead of any item
• Fixed adjusting a tool's ability or fluid type applying the change to the off-hand item instead of the one in your main hand
• The first perfluoromethyl compression step now appears in JEI
• Fixed Control Panel labels being clipped or hidden behind the panel surface
• Gas blocks no longer play a breaking sound or spawn particles when replaced, such as by a bucket
• Fixed the RBMK autoloader being unable to place columns onto RBMK cover slabs
• Fixed Glyphid Hives spawning underground or on top of trees
• Fixed the dusty filing cabinet not showing breaking particles when mined
• Painted ducts and cables now display their connected textures correctly
• The detonator can now trigger silo launch pads in unloaded chunks
• The detonator no longer falsely reports a target as too far away, or miscounts linked launch pads, when it is outside render distance
• Fixed garbled text in the electrical coil's warning message
• Fixed an invalid crucible recipe that registered a broken item
• Fixed the Russian translation of the gasoline recipe
• Fixed the ammo belt on the Sexy and Heretic shotguns rendering at the wrong angle
• Fixed the Radio Torch Sender and Receiver causing inventory desync when their interface was opened
• Fixed radioactive lava showing a missing-model placeholder when held as an item
• Fixed the Radio Torch Controller's info button not correctly showing the connected device's details
• Fixed the autosaw misreading Mustard Willow growth stages, so it no longer skips harvestable plants or cuts ungrown ones
• Fixed cage lights rendering too dark; they now correctly appear as a translucent wire cage with a bright lamp
• Fixed powered fans blowing air in the wrong direction
• Fixed the Radiobox rendering in the wrong orientation when facing west or east, along with a server crash it could cause
• Fixed the Diesel Generator's fuel-grade tooltip showing internal text instead of proper fuel names
• Fixed the industrial boiler's groan playing far too loudly, audible from a huge distance
• Fixed crash when a mod ships immutable SpawnableList to suppress spawns in modded biomes

Changes

• Realigned which blocks nuclear explosions transmute to match upstream: coal ore once again follows vanilla diamond/emerald behavior and a few other special cases were dropped, while stone and bedrock are still converted through the fallout system
• Fans can now be toggled between blowing and sucking by using a defuser on them, pulling entities in instead of pushing them away
• Steel and Titanium tools and armor have been buffed with a higher harvest tier, durability and enchantability; Steel pickaxes, axes and shovels now mine blocks in an area, and the Steel sword stuns enemies
• Desh tools are now simply named "Desh" instead of "Worker's Alloy"
• The Blast Furnace now produces Meteorite Ingots from cobalt and meteorite powder, which Star Metal now requires
• Circuit chips and the atomic clock are now produced in the Assembly Machine, with cheaper alternate recipes, rather than at a crafting table, and the Chemical Plant gained recipes for napalm canisters, obsidian, and turning cobblestone into gravel and sand
• Rebalanced several recipes, including the Nuclear Detonator, the satellite base, and demolition and Schrabidium grenade fillings
• Natural gas and sour gas now release toxic pollution when burned
• The Chlorine geysir can now generate in Plains biomes
• Gun-wielding mobs now aim based on their weapon's real accuracy and can fire in fixed bursts, making their fire less random

New Features

• Added container1000water ore dictionary to water bucket
• Added the Blast Furnace, a new multiblock machine that smelts steel, red copper, firebrick, starmetal and more; it burns solid fuel and runs faster when fed Hot Air Blast (made by heating air in a boiler), giving off Flue Gas as exhaust
• Added the Custom Machine system: define your own processing machines through a config file — setting their recipes, interface layout, power, heat, pollution and multiblock structure — with full JEI support and an example Paper Press, plus a set of custom-machine building blocks (casings, tanks, ports, motors, circuits and more)
• Added the Vending Machine, a block that dispenses random food or drinks when used with a Vending Machine Token; soda and snack variants are both available from the Bobmazon
• Added AUTOCAL, a programmable controller for the Redstone-over-Radio network that runs scripts you write (loaded from a text file) to send and receive RoR signals, do math, branch and loop
• Added the Big-Ass Tank, a large multiblock fluid-storage machine
• Added the Grenade Machinegun, a fully-automatic 40mm grenade launcher
• Added the Target Pistol (.22 LR), along with an akimbo Target Pistols variant, a silenced form, and a 9mm conversion
• Loot containers in generated structures can now spawn locked, with a configurable lockpicking difficulty that counterfeit keys cannot bypass
• Added new gear loot to structure loot piles, plus two new generated structures: a modified crane and a radio repeater
• Added a config option (off by default) that makes large machines require a proper foundation, or they will tilt over and break

Misc

• Recipe-view tooltips for the PUREX, Fusion Reactor and Plasma Forge now show their processing time, power and temperature
• HBM blocks are now excluded from Quark's stair-recrafting to avoid duplicate or unbalanced recipes
• Added new metal-impact sound effects
• Added CTM compat for paintable blocks
• When Less Bullshit Mode's Full Schrab option is enabled, Schraranium Ingots now display as "Nikonium" with their own texture

Fixes

• Meteor impact fallout can once again set flammable blocks on fire, and burning earth now forms correctly when it isn't raining
• Emissive overlay textures on several blocks and items with Optifine
• Muffling a force field now silences all of its spark sounds, including the one played when entities are pushed inside
• Fixed the digamma (DRX) HUD meter using the wrong texture and displaying incorrectly
• Removed stray debug axis lines that were drawn over custom missiles when held or displayed
• The ReaSim RBMK automatic control rod screen now shows a power indicator light so you can tell whether the rod is receiving power
• The Digamma Spear now properly kills nearby living entities — including players in creative mode — when it detonates
• Stack upgrades are no longer mistakenly treated as speed upgrades when installed in machines
• Fixed the fluid temperature line appearing multiple times in the tooltips of tanks, barrels and lead containers
• Cracked keys and launch code pieces now drop from hostile mobs at their intended rate instead of almost never appearing
• 40mm grenades no longer pass harmlessly through enemies at point-blank range; they now only skip detonating against the shooter
• Cluster missiles now reliably split into their submunitions on descent
• The Ore Acidizer now plays its running sound while operating
• The TOM now correctly spawns its mushroom cloud when it falls below the world surface
• Fixed volcano cores not saving and resuming their eruption progress
• Fixed a crash that could occur when a looping machine sound restarted before its previous instance had fully stopped
• Fixed missing lever and boiler sound effects caused by mismatched sound file names
• Crane contents, including installed upgrade items, no longer vanish when rotating or adjusting the crane with a screwdriver
• Fixed a crash when entering a decimal number into the Dark Fusion Core emitter's output field (by xdoxx123)
• Cable diodes now correctly show their configured throughput limit and network priority on the client instead of stale or default values

Changes

• Changed some recipes to reflect upstream changes
• FaU and DNS power armor now also provide strong physical and fire resistance
• Foundry Scraps are now named after the material they contain (e.g. "Iron Scraps"), with cleaned-up tooltips
• Overworld bedrock ore deposits now generate in tiers based on local ore density, and higher tiers require a boring fluid (water, sulfuric acid or solvent) to extract; the Ore Density Scanner now reports a deposit's tier and the fluid it needs
• The RBMK graph panel now lets you set fixed minimum and maximum values for each graph
• The Automatic Buzz Saw tooltip now lists coal tar creosote as an accepted fuel
• Volcanic eruptions now react with diamond ore to form gem-bearing volcanic ore (radioactive eruptions produce radioactive gem ore)
• The detector lens overlay can now pinpoint radioactive volcano cores
• Refreshed a range of textures

New Features

• Added radioactive volcanoes: a new radioactive volcano core that erupts radioactive lava and contaminates the surrounding area, plus radioactive lava that irradiates anything it touches and cools into sellafield rock and rare radioactive ores
• Added a shield-volcano variant that melts away surface terrain over a wide area instead of building a tall cone
• Fissure bombs detonated inside crater biomes now tear open radioactive volcanic fissures, and nuclear fallout can transmute ordinary volcano cores into radioactive ones
• Added the Cargo Elevator, a multi-block lift you can extend upward and toggle to raise or lower cargo and entities on its platform
• Added Pneumatic Storage Access and Pneumatic Storage Clutter blocks, letting pneumatic tube networks store and remotely access inventory contents
• Added the Redstone-over-Radio Terminal, a console for manually composing and broadcasting RoR commands, with channel setup, repeating signals and a command history
• Gun turrets and the ZIRNOX reactor can now be controlled remotely over Redstone-over-Radio — toggling power, target filters and whitelists, artillery targeting, venting CO2 and reading reactor stats
• Fluid barrels, fluid tanks, UF6 and PuF6 tanks, the Orbus tank and the Big Ass Tank 9000 now emit a redstone comparator signal based on how full they are, letting you wire them into redstone automation (PR #1408 by Hacker6329)
• Mining Helmets can now be found in abandoned mineshaft and spawn bonus chests, and Cracked Keys in abandoned mineshaft and dungeon chests
• Added a config option to make doors require a continuous redstone signal to stay open, instead of toggling open or closed on each redstone pulse

Misc

• Added a new developer bobblehead
• Updated the Japanese translation for the "dangerous drop" item trait label

Fixed a 2.5.0.0 regression that caused boilers crashing the game on load

Reverted a load order change in 2.5 that caused some regressions.

Breaking Changes

• Dropped unmaintained translation files. Supported languages are now: English, German, French, Italian, Japanese, Polish, Russian, Simplified Chinese, Ukrainian.

Fixes

• Fixed T-51 texture loading
• Fixed jetpack rendering not following the player's body orientation while elytra-flying
• Fixed industrial fans and turret biometric whitelists desyncing between client and server
• Fixed sawmill recipe (#1424)
• Fixed NTM tools being unable to mine bobbleheads
• Fixed gun shader rendering under Optifine (2.3 regression)
• Fixed turbofans applying player motion on the client even when the engine wasn't running
• Fixed multiblock placement being blocked when the player's head merely clipped the build area, and fixed large flare-tower blocks suffocating players and allowing hostile mob spawns
• Fixed decoration blocks (CRT, toaster, satellite-dish pole, tape recorder, filing cabinet, misc. deco) losing their stored state when pushed/pulled by block-movers, and fixed CRT/toaster/filing cabinet/screen blocks rotating incorrectly when placed (#1360)
• Fixed the pole satellite receiver model
• Fixed control-panel composite data values retaining stale entries after reload
• Fixed control-panel Input nodes failing to deserialize when their name was missing
• Fixed crash with low-radius contaminating drops
• Fixed crash and incredible log spam when a node queries a te in a not-yet-loaded chunk during world load
• Fixed dedicated server crash on chunk load for RBMK Gauge, Graph, Indicator, KeyPad, Lever, and Numitron blocks
• Fixed Experience Bottles not being convertible to Experience Juice in barrels and fluid tanks
• Maskman now only spawns near player who have obtained or placed the Ore Acidizer
• Fixed crash when copying fluid from a fluid duct to a multi fluid identifier

Changes

• On-screen info messages now render in a stable, deterministic order instead of being reordered by timing
• Oil ore can no longer be silk-touched
• Alexandrite ore now drops at most two gems regardless of fortune
• Oil deposits now spawn less often in hot, arid biomes
• Steel grates now have an additional height level
• Removed the crafting recipes for the Mini RTG and the Power RTG
• Re-ported sliding blast door

New Features

• Ported recent upstream additions from X5671, including:
  • New Redstone-over-Radio Pager item
  • New Redstone-over-Radio Indicator Lights and Lever panel blocks (screwdriver-configurable), with matching manual pages
  • Paintable fluid ducts, exhaust pipes, and pneumatic tubes now document paint and port configuration in their tooltips
  • New lever click and electrical spark sound effects
  • New IR-tier Tesla capacitor ammo with a chain-lightning beam
  • Self-charging batteries placed in Battery Sockets now intermittently arc to nearby entities and detonate locally
  • Empty pipelines now adopt the connecting pipeline's fluid type when joined
  • New mixer recipe converting tar (any) into Bitumen
  • New Mug Can drink that grants Resistance and Regeneration when consumed
  • Removed the legacy Plasma block
• Added OpenComputers integration for the RBMK Gauge, Graph, KeyPad, and Numitron
• Added a HEALTHBAR_HUD client config to toggle the VATS-style entity healthbar overlay (#1447)
• Added a mobWeaponSootReduction server config to lower the soot threshold for skeletons spawning with guns
• Ported Foundry Spill Outlets

Performance

• Reduced per-tick work and network traffic. For developers: this is a substantial API change for TileEntityLoadedBase! You are now required to override (de)serializeInitial instead of vanilla updateTag methods for the correct first sync on chunk load.
• Sawmills now cache their recipe lookup
• Made rendering slightly less CPU intensive

Misc

• Some localization changes
• Reduced jar size by ~10MiB by removing unused assets

Breaking Changes

• Ported upstream rework of grenades; existing grenades in the world and in inventories will be lost
• Removed crucible_template; the recipe is now picked directly on the crucible through its GUI, and template_folder/journal_pip/journal_bj/journal_silver no longer open a template folder GUI
• Removed turret_control
• Siege mobs now drop plain steel ingots instead of tier-specific siege coins

Fixes

• Fixed multiblocks jump-placing over living entities; placement is now refused if anything is standing inside the footprint
• Fixed sliding blast door dropping its keypad when broken
• Fixed diesel generator failing to locate its smokestack
• Fixed wood-burner visual drift
• Fixed RBMK console text drifting over time
• Fixed ICF splash particle being off-center
• Fixed custom missile rendering glitches
• Fixed Astolfization potion effect not having its intended visuals
• Smoothed out the visual transition of items moving between conveyors
• Drill-equipped weapons no longer spam block-break sounds on unbreakable blocks
• Custom Control Panel: fixed visual color leak and relog bug, keyboard-repeat not firing, nodes being deletable while typing in text fields, and panels not loading properly
• Fixed skeleton particle rendering
• Fixed a crash when reloading a world with nuke/fallout without restarting the client
• Fixed BAT9000 not having persistent NBT for item drops

Changes

• Ported new fallout block textures
• RBMK Crane Console: highlights the column currently under the crane in yellow on both rbmk_console and rbmk_display screens
• Machine Press GUI gained a 9-slot extra-storage row
• Custom mob bonus drops (spider/zombie/skeleton/creeper ingots) are now gated behind the doMobLoot gamerule
• Bedrock heavy-metal radsolvent output tweaked: bismuth 1 → 2, added tantalium 2
• Plasma Forge port completed
• DFC parts (dfc_core, dfc_emitter, dfc_receiver, dfc_injector, dfc_stabilizer) can no longer be crafted on the crafting table and must now be produced in the Plasma Forge

New Features

• Added modular RBMK Redstone-over-Radio panel system: rbmk_key_pad, rbmk_gauge, rbmk_graph, rbmk_numitron, and rbmk_display_blank, compatible with RBMK control rods, manual control rods and fuel rods
• Added fluid-barrel connector: barrels now visually link up to adjacent fluid pipes carrying the same fluid
• Added pill_red consumable
• Added plates_cast mold and matching triple-cast-plate anvil recipe
• Added toggle-magnet keybind (default Z) with on-screen ON/OFF feedback; existing jetpack and HUD toggles also report their new state
• Added zombie bonus drops (copper, aluminium, titanium ingots at 1/200 each)
• Added crafting recipes for NUMITRON circuit, vanilla hopper, vanilla bucket, and graphite ingot from fine carbon wire
• Added copy-paste for Custom Control Panel instruments
• Added tagged-link system for Custom Control Panel: links survive the linked block being broken and can be identified by a tag string; hint "Shift+A to add node" shown in the node editor
• Added composite data-value type for the Custom Control Panel
• Siege mobs can now be configured with laser-weapon responses (block-breaking, explosion, incendiary)
• Added more JEI recipe transfer handlers
• Grouped some items in HEI (requires HEI 4.30.0+)

Performance

• Reduced redundant per-frame work in the chunk and tile-entity rendering path

Misc

• Custom Control Panel is no longer marked [WIP]

• Fixed crate item stack custom name not being displayed
• Fixed a crash when the GUI of Klystron is opened immediately after placement
• Fixed a 2.3.0.0 regression that caused Celeritas to incorrectly cull chunks
• Fixed an issue that may cause RBMK to explode on chunk load/unload
• Fixed a hazard system oredict aliasing issue