Changelog

Version: 0.4.8
Date: 2026-10-31
  Bugfixes:
    - Exclude Transport Drones delivery requests from material production checks, preventing false material availability and unwanted drone-delivery research prerequisites.

Version: 0.4.7
Date: 2026-10-30
  Compatibility:
    - Add a Tellurium section to the Milestones mod. New maps get it automatically; on an existing save, press Reset in the Milestones settings and confirm to add it, which also discards your own edits to that list.

Version: 0.4.6
Date: 2026-10-30
  Optimizations:
    - Reduce startup time in large mod packs: each material source search reads research unlocks once instead of once per candidate recipe.
    - Recipes, research prerequisites and material choices are unchanged.

Version: 0.4.5
Date: 2026-10-29
  Optimizations:
    - Reduce startup time in large mod packs: material supply checks propagate availability through a work list instead of re-scanning every recipe on every round, read each proof's recipes once, resolve research legality with one prerequisite walk, and skip proofs for materials that do not exist.
    - Recipes, research prerequisites and material choices are unchanged.
    - Deduplicate recycling unlocks in one pass instead of removing each duplicate separately.

Version: 0.4.4
Date: 2026-10-29
  Optimizations:
    - Reduce startup work in material supply checks by matching machines only for needed recipes and reusing matches for equivalent crafting requirements.
    - Preserve machine capacity, research tier and progression-cycle safeguards while avoiding repeated recipe-by-machine scans in large mod packs.

Version: 0.4.3
Date: 2026-10-25
  Compatibility:
    - Remove the BZ Lib dependency. Tellurium now uses Factorio's native item lookup and loads without BZ Lib.
    - Existing recipes, research and saved machines are preserved when updating from 0.4.2, including when BZ Lib is removed.
    - This removes the BZ Lib dependency conflict with All the Resources Mod; full ATRM compatibility remains unverified.

Version: 0.4.2
Date: 2026-10-23
  Changes:
    - Require Factorio 2.1.23 or later in the 2.1 series.
    - Mention Brevven's BZ mods in the searchable summary.

Version: 0.4.1
Date: 2026-10-23
  Changes:
    - Accumulators require one tellurium copper per item for electrical terminals. Existing ingredients, crafting time, capacity and charging speed stay unchanged.
  Compatibility:
    - Require Tellurium processing at every accumulator unlock where its existing science tier permits it without a research cycle. Preserve earlier overhaul recipes and respect the accumulator bypass.
    - Scale alloy costs with deterministic output batches and refresh recycling.
    - Existing researched saves gain missing Tellurium research and retain accumulator unlocks. Supply tellurium copper to existing accumulator assemblers after updating.

Version: 0.4.0
Date: 2026-10-17
  Changes:
    - Connect external factories through precipitate calcination, polished optical blanks and assembled thermoelectric couples.
    - These integration additions leave Fluffy-only recipes, machines and progression unchanged, with or without Space Age.
  Features:
    - External material packs gain tellurium precipitation and furnace calcination, optical blanks and polishing, and packaged thermoelectric couples.
    - Use reachable native neutralisers, chemicals, ceramics, wiring, solder, cooling and polymer parts. Antimony supplies thermoelectric doping.
    - Dry reductions support BZ foundries; dry optical blanks also support Gallium crystal pullers.
  Compatibility:
    - Fluffy-only and Fluffy with Space Age retain their existing recipes and progression.
    - Preserve released machine inputs, fluids, finished products, recipe quality and blueprints during upgrades.
    - Requires coordinated companion versions when those Fluffy mods are installed.

Version: 0.3.1
Date: 2026-10-12
  Compatibility:
    - Corrundum chalcopyrite refining can recover a rare tellurium residue, with the same inputs and sulfate output, taking 25% longer. Ordinary refining remains available.
    - Paracelsin tetrahedrite melting can recover a rare tellurium residue, preserving its inputs, molten copper output and surface restriction, taking 25% longer. Ordinary melting remains available.
    - Existing saves gain the optional recipe when its original processing research is already complete.

Version: 0.3.0
Date: 2026-10-12
  Features:
    - Space Age carbon can reduce tellurium dioxide without coal. The early reduction routes remain available.
    - Fulgora electromagnetic plants turn dioxide and electrolyte into tellurium metal.
    - Gleba biochambers reduce dioxide with bioflux and water, benefiting from the chamber's productivity.
    - Advanced metallic asteroid crushing can recover rare tellurium residue, taking a quarter longer. Asteroid productivity improves its ore outputs, but not residue or returned chunks; quality is disabled.
    - Metallurgic science unlocks infinite Tellurium refining productivity: 10% more dioxide, crystals and alloy per level. Rare residue recovery is unchanged.
  Changes:
    - Cryogenic plants can run chemical extraction and reduction as well as crystal growth. Copper recovery keeps its ordinary machine route.
    - With Space Age, reusable-charge rubber cannot raise the quality of its returned tellurium charge.
    - A Space Age tip explains the local supply chains. Aquilo still needs imported tellurium materials.
    - Existing saves gain new recipe unlocks from already researched technologies. Existing recipes, inputs and researched bonuses are preserved.

Version: 0.2.5
Date: 2026-10-12
  Balancing:
    - Fulgora scrap recovery gives 2 copper plates from 20 scrap, with 10 sulfuric acid and 20 water. It gave twice the copper that recycling the same scrap would, and replaced Fulgora's copper smelting.
  Bugfixes:
    - Recycling substations, beacons, laser turrets, solar panels, electric engines, satellites, rocket silos and tier-3 modules returns their tellurium. Quality cycling destroyed it before.
  Compatibility:
    - Rubia: a rocket silo crafted on Rubia uses Rubia's own recipe without tellurium crystals, which Rubia can't make.
  Locale:
    - The Space Age recovery and casting recipes explain what they do. Removed names of research that doesn't exist.

Version: 0.2.4
Date: 2026-10-11
  Features:
    - Flamethrowers require two tellurium copper for nozzle and valve parts; turrets require four.
      Preserve all existing ingredients, products, crafting time and combat behavior.
  Compatibility:
    - Require Tellurium processing only within the host's existing science tier, reject research
      cycles and earlier overhaul unlocks, respect recipe bypasses, and regenerate recycling.
    - Already researched saves retain weapon unlocks and gain missing Tellurium research.
      Supply the new alloy to existing flamethrower assemblers after updating.

Version: 0.2.3
Date: 2026-10-10
  Changes:
    - Tellurium copper must be made in a machine. Vanilla assemblers of every tier can make it;
      hand crafting is no longer available. Ingredients, output and research stay unchanged.
  Compatibility:
    - Space Age foundries can also make the solid copper-plate alloy recipe. Preserve the early
      assembler route, existing molten-copper casting and BZ Foundry/Alloy Smelting routes.
    - Existing assembler recipes and compatible inputs survive the update.

Version: 0.2.2
Date: 2026-10-04
  Features:
    - Rocket launchers require two tellurium copper for precision electrical contacts, preserving
      existing ingredients and crafting time. Rocket ammo and weapon effects are unchanged.
  Compatibility:
    - Gate every launcher unlock on Tellurium processing only when it adds no new science packs
      and creates no research cycle. Preserve starting recipes and respect rocket-launcher bypass.
    - Scale alloy cost per deterministic output and regenerate launcher recycling.
  Changes:
    - Existing launcher assemblers need tellurium copper after updating. Already researched saves
      retain their unlocks and gain missing Tellurium research through the existing upgrade handler.

Version: 0.2.1
Date: 2026-09-25
  Compatibility:
    - Krastorio 2: the laser artillery turret needs five tellurium-dioxide crystals, one per carbon-dioxide laser. Advanced solar panels are crafted four at a time with one tellurium metal, the vanilla panel's thin-film charge per megawatt; SE space solar panels inherit it.
    - Space Exploration: energy-beam emitters need 50 crystals and energy beam defence 20. With Bismuth, space supercomputers need 20 thermoelectric components (higher tiers inherit them) and RTG equipment 10.
    - Each change requires the matching Tellurium research, is skipped if that would create a research cycle, and can be bypassed by exact recipe name.
  Bugfixes:
    - The SE thermal-branch availability check inspected the recipe name instead of the recipe, so it never skipped.
  Changes:
    - Existing saves: the changed recipes need tellurium after updating. Missing Tellurium research for already researched technologies is completed automatically.

Version: 0.2.0
Date: 2026-09-23
  Balancing:
    - Copper trace recovery now smelts at steel or electric furnace speed: 32 seconds per 20 ore in a chemical plant, down from the output of four furnaces. Recovery is a deliberate diversion of copper rather than a denser smelter. Residue per ore is unchanged.
    - Crushed-copper recovery follows the same furnace-speed rule.
  Features:
    - Electric engine units are crafted five at a time with one tellurium copper, so robots, the rocket silo and utility science need tellurium.
    - Solar panels are crafted ten at a time with one tellurium metal as a thin-film absorber.
    - The rocket silo needs 20 tellurium-dioxide crystals.
    - With Bismuth, productivity, efficiency and quality module 3 need two thermoelectric components, like speed module 3.
    - Tellurium optics also grants +10% laser damage and +10% laser shooting speed.
  Changes:
    - Existing saves: electric engine, solar panel and rocket silo recipes need tellurium after updating. Tellurium research that already researched technologies now depend on is completed automatically, so the recovery chain is available at once; build it before those assemblers run dry.
  Compatibility:
    - Rocket-Silo Construction: the excavation site that replaces the rocket silo needs the silo's 20 crystals, once per silo.
  Locale:
    - Add technology and item descriptions, including when to start recovery and where productivity modules pay off.
  Graphics:
    - Tellurium copper carries a tellurium badge so it stands apart from copper plates.

Version: 0.1.12
Date: 2026-09-23
  Compatibility:
    - Register tellurium materials for Space Exploration delivery cannons, preserving normal capsule costs and cargo quantities. Finished thermoelectric components remain ordinary cargo.
    - Add two tellurium copper to SE pylon substations and four thermoelectric components to SE thermodynamics laboratories when the thermal branch is usable.
    - Gate the equipment changes on Tellurium research, skip unsafe progression cycles, and respect individual recipe bypasses.
    - Preserve existing K2 copper enrichment and inherited optics without additional residue or downstream crystal charges.

Version: 0.1.11
Date: 2026-09-20
  Bugfixes:
    - Prefer enabled and earlier usable material sources over late recipes with matching names; reject inaccessible research, recycling, barrel emptying, matter routes and net-zero returns.
    - Use actual bismuth production prerequisites instead of optional K2 enrichment; keep ordinary thermoelectrics independent of late argon and optical research.
    - Preserve coal-reduction unlocks and thermal recipe inputs/output when those recipes are bypassed.
    - Retain downstream alloy requirements when the power-regulator integration is bypassed or cannot be applied.
  Compatibility:
    - Allow the existing thermoelectric component recipe in electromagnetic plants and crystal growth in cryogenic plants, preserving the ordinary machine routes.
    - Reuse existing unlocks for optional refining, recovery and rubber improvements without adding broad upstream research gates. Native K2 copper enrichment retains its processing prerequisite.
  Locale:
    - Explain recovery rarity and refining recipes; include selected source recipes and unlocks in optional diagnostics.
    - Consolidate the current three-branch design and integration descriptions.

Version: 0.1.10
Date: 2026-09-20
  Balancing:
    - Batch Ashier scanners and spectroscopes: one optical crystal per twenty instruments, preserving all other costs and crafting time per item.
    - Keep shared helium and carbon-dioxide lasers free of Tellurium to avoid an accidental K2 advanced science surcharge; laser turrets retain their direct crystal requirement.
    - Batch HV power regulators: one tellurium copper per ten regulators, preserving upstream costs and time per item.
    - Keep rare recovery rates and refining efficiency tiers unchanged.

Version: 0.1.9
Date: 2026-09-20
  Compatibility:
    - Adapt the single optical-crystal recipe to use two bismuth glass, or ordinary glass when available.
    - Preserve the four-crystal yield, duration, water and tellurium dioxide costs; require the glass production technology.
    - Ignore recycling, matter conversion and glass sources dependent on Tellurium optics; preserve the base recipe without a safe provider.

Version: 0.1.8
Date: 2026-09-20
  Compatibility:
    - Add optional tellurium-assisted synthetic rubber for BrimStuff: 33% more rubber with a 99% returned tellurium charge.
    - Preserve source ingredients, waste, duration and machine category; unlock through existing polymer research.
    - Exclude returned tellurium from productivity and disable automatic reverse recycling.

Version: 0.1.7
Date: 2026-09-20
  Bugfixes:
    - Read researched unlock effects from technology prototypes when the mod configuration changes.
  Compatibility:
    - Peroxide extraction now uses sulfuric acid and peroxide without a separate water input, allowing ordinary chemical plants.
    - Reduce peroxide extraction to three residue per dioxide, giving it a distinct efficiency benefit over four-residue chloride extraction. Retain the eight-second duration and existing peroxide technology unlock.

Version: 0.1.6
Date: 2026-09-20
  Locale:
    - Give optional refining/recovery technologies distinct names and remove internal IDs from refining recipe names.
    - Explain the residue-saving tradeoff in the peroxide extraction tooltip.
  Balancing:
    - Consolidate copper enrichment into the existing K2 recipe with residue recovery and 25% longer processing.
    - Keep only processing, optics and thermoelectrics technologies; integrations use existing research.
  Compatibility:
    - Transfer satellite crystals into IntermediatesForYou satellite bodies while preserving the per-satellite cost.
    - Use optical crystals in LasingAround helium lasers instead of charging their scanners and spectroscopes directly.
    - Transfer laser turret crystals into carbon-dioxide lasers when consumed by the turret.
    - Add optics research prerequisites to the component technologies and respect recipe bypasses.

Version: 0.1.5
Date: 2026-09-20
  Bugfixes:
    - Recognize mined graphite and its mining fluid instead of gating early reduction behind K2 matter technology.

Version: 0.1.4
Date: 2026-09-20
  Balancing:
    - Fold available heatsinks or cooling fans into the standard thermoelectric recipe, preserving solder and increasing output to six. Remove the duplicate cooling recipe.
  Compatibility:
    - Add explicit MetalsForYou load ordering and test profiles for its full 2.1 source collection, IntermediatesForYou and GasGasGases.

Version: 0.1.3
Date: 2026-09-20
  Balancing:
    - Adapt the standard thermoelectric recipe to available solder and substrate materials instead of keeping competing equal-yield recipes.
    - Require the selected materials' production technologies before thermoelectrics.
  Locale:
    - Give the cooling-assembly recipe a readable name.

Version: 0.1.2
Date: 2026-09-20
  Graphics:
    - Added dedicated Peltier module artwork for thermoelectric components and research.
    - Replaced the bismuth telluride battery placeholder with crystalline semiconductor wafers.

Version: 0.1.1
Date: 2026-09-20
  Graphics:
    - Added original tellurium metal and optical crystal item and technology icons.
    - Replaced the blue science flask in tellurium processing and refining research.

Version: 0.1.0
Date: 2026-09-20

  Major Features:
    - Added tellurium recovery, refining, optics, alloy, and optional bismuth thermoelectric chains.
    - Added compatibility hooks for the BZ family and related Factorio 2.1 material mods.