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Design document — Changelog
Changelog from v2.0 — Game Design Pass. Newest first. Each entry keeps the one-paragraph summary the document records for it, where there is one, above the full notes.
- v3.127 — The Space Era as the Endgame
- v3.126 — The "Promising Developments" Notification Removed
- v3.125 — Ring Fortress Merged into Reinforced Concrete
- v3.124 — Fewer Late Breakthroughs; Competing Solutions Measured
- v3.123 — Parity with Base Civ V's Science Victory; a Smoother Opening
- v3.122 — Base Civ V's Game Lengths: The Late Eras Redrawn and Dearer
- v3.121 — Endeavours on Ideas Under Study
- v3.120 — The Discovery Model Written In; the Safety Net; W16 Dropped
- v3.119 — Gearing Is Classical
- v3.118 — Glass Without a Shore
- v3.117 — The Windmill, the Dry Country's Mill
- v3.116 — The University Before the Press; Comparative Anatomy Merged
- v3.115 — Sixteen Missing Enablers
- v3.114 — Dialectical Thinking Removed
- v3.113 — Experiment and Synthesis Removed
- v3.112 — The FTL Endgame Redesign Written In
- v3.111 — FTL Re-Audit, Part 2: The Evidence Map, a Scientific Register, the Aether Tension Engine
- v3.110 — FTL Re-Audit, Part 1: Structure and Era Parity
- v3.109 — Dual-Path Records Made Consistent
- v3.108 — Era Boundaries Redrawn: An Even Pace, Base Civ V's Game Length
- v3.107 — DNA Structure in Every World
- v3.106 — Distillation Needs Alchemy
- v3.105 — Thinning, Batch 7: Middle-Era Skeleton Merges; A Notation Without Precedence
- v3.104 — Thinning, Batch 6: Atomic-Era Skeleton Merges
- v3.103 — Thinning, Batch 5: Modern-Era Skeleton Merges
- v3.102 — Thinning, Batch 4: Ancient-Era Skeleton Merges
- v3.101 — Thinning, Batch 3: The Remaining Stepping Stones
- v3.100 — Thinning, Batch 2: Warfare, Construction, Philosophy and the Arts, Metallurgy, Observation
- v3.99 — Thinning, Batch 1: Chemistry
- v3.98 — Closing the Power Pass; One Prerequisite Parser
- v3.97 — Era Entry: Small Counts, Provisional
- v3.96 — One Engine; Plants for Every Fuel
- v3.95 — A Stale Name in a Conditional
- v3.94 — One Blast Furnace
- v3.93 — Fossil-Free Guarantees
- v3.92 — The Space Era Consolidated
- v3.91 — Cost Scaling Corrected: Whole-City Production and Calibrated Eras
- v3.90 — Cost Tuning (Power Rebalance, Stage 5)
- v3.89 — Wonder-Only Rows (Power Rebalance, Stage 4)
- v3.88 — Safe Predecessors: the Requirement Audit
- v3.87 — Required Buildings
- v3.86 — Growth and Healing by Disease Paradigm (Power Rebalance, Stage 3b)
- v3.85 — Food, Culture and Happiness (Power Rebalance, Stage 3a)
- v3.84 — Every Breakthrough Carries a Benefit
- v3.83 — The Middle Eras Filled
- v3.82 — The Late Plants Trade
- v3.81 — Power Pass, Stage 2: Production (and Science, completed)
- v3.80 — Power Pass, Stage 1: Science
- v3.79 — Spin Gravity Removed
- v3.78 — Era Dates, and Spin Gravity
- v3.77 — Spaceship Production Balance
- v3.76 — Exclusion by Replacement
- v3.75 — Engine Houses Convert
- v3.74 — An Early Steam Path
- v3.73 — Section 5 Brought Up to Date
- v3.72 — The Airship Disaster
- v3.71 — Phlogiston Is a Model, Not a World
- v3.70 — The Geology Is Data; Fuel Lodes by Either Route
- v3.69 — Turbary
- v3.68 — Whisky Spends Its Peat
- v3.67 — Whisky
- v3.66 — Fossil-Free Worlds Follow the Same Rules
- v3.65 — The Fossil-Fuel-Absent World, Completed
- v3.64 — Alternatives Trade, Never Simply Add; Phages and Perceptrons
- v3.63 — Edison and Tesla Are Engineers
- v3.62 — The War of the Currents
- v3.61 — Competing Solutions Replace UNCOMMON Obsolescence
- v3.60 — Filter Validation; World-Truth Language Made Accurate
- v3.59 — Tier Review: CORE Means Visible and Aimable
- v3.58 — Philosophy and the Arts; CORE Breakthroughs Reveal Themselves
- v3.57 — Mechanical Grounding, Batch 8 (Materials, Genetics, Energy, Culture) — Grounding Complete
- v3.56 — Grand Aerostat in Levity Worlds; Arcologies
- v3.55 — FTL Is the Science Victory; the Generation Ship Is the Challenge
- v3.54 — Mechanical Grounding, Batch 7 (Rocketry, Aeronautics, Space Engineering); Victories Made Buildable
- v3.53 — Nothing Renamed for Flavour
- v3.52 — Mechanical Grounding, Batch 6 (Quintessic, Quantum, Relativity)
- v3.51 — Lodes Gated by Knowledge; a Lost Token Source Restored
- v3.50 — Transmutation Re-locks into the Land
- v3.49 — One New Mechanic per Elemental World; Matter Budget Reset
- v3.48 — One-to-One Feeding; the Great Wheel Feeds Two
- v3.47 — Water Turnings on the Coast
- v3.46 — Qi Removed; the Five Turnings Become Great Sage Improvements
- v3.45 — The Flow Cannot Be Forced; Quantitative Audit Recorded
- v3.44 — Multipliers Are Situational
- v3.43 — Cost Multipliers as a Balance Lever
- v3.42 — The Familiar World Is the Baseline; the Silicon Age Is Atomic
- v3.41 — Process Parity and the Atomic Engine
- v3.40 — Matter for Tall Civilisations
- v3.39 — Filter Discipline
- v3.38 — The Hall Makes Matter, Not Goods; Bullion Buy-Only and Immediate
- v3.37 — Banking Processes: Dispersal, Turning the Wheel, Banking Heat
- v3.36 — The Matter Economy Balanced Against Unciv's Formulas
- v3.35 — Re-locking Priced Against Gold; a Truncation Bug Caught
- v3.34 — The Converter Duplicates: Losses Moved to Where They Really Are
- v3.33 — Bullion Buys Friends
- v3.32 — Bullion Is a Conversion, Not a Caravan
- v3.31 — Bullion and Banked Production; Heat Follows the Terrain
- v3.30 — Phlogiston and Caloric Worlds Made Whole
- v3.29 — Strategic Resource Audit
- v3.28 — Rare Earths Made a Real Strategic Resource
- v3.27 — No Conjured Animals; the Cycle Forge as the Mirror of Transmutation
- v3.26 — Transmutation as a Stockpile; Decisive Experiments as Laboratories
- v3.25 — Mechanical Grounding, Batch 5 (Chemistry, Optics, Electricity, Electronics, Computing)
- v3.24 — Nation-Unique Layering; Mechanical Grounding, Batch 4 (Trade, Textiles, Water Management, Mechanics, Thermodynamics)
- v3.23 — Mechanical Grounding, Batch 3 (Seafaring, Warfare, Mathematics, Philosophy, Medicine); Arsenical Bronze Removed
- v3.22 — Mechanical Grounding, Batch 2 (Farming, Animal Husbandry, Mining, Metallurgy, Construction)
- v3.21 — Mechanical Grounding, Batch 1 (Fire, Foraging, Stonework, Observation, Social Organisation)
- v3.20 — Elemental Worlds Derived from Physics (Density Parity, Rewiring, Phase Ascendancy Dropped)
- v3.19 — Cleanup Pass (Stale Text, Labels, Duplicate, Lockout Clarification)
- v3.18 — Coherent Light in Elemental Worlds (Laser Resolution)
- v3.17 — FTL in Elemental Worlds (Ontology-First Pass)
- v3.16 — Quintessic Physics: Fleshing-Out & Elemental Divergence
- v3.15 — Insight Scale & Calibration
- v3.14 — Early-Game Pacing & Insight Routing
- v3.13 — Unit Assignment + Religion-Gate Fix
- v3.12 — Policy/Belief Cleanup + Base-Game Object Assignment
- v3.11 — Civ V / Unciv Platform Fit: Health Removed, Marsh Signal Removed
- v3.10 — Discovery Reveals Reality, Never Rewrites It
- v3.9 — Rehomed IDs Renumbered & Signal Fires → Fire
- v3.8 — Communications Focus Dissolved
- v3.7 — Disease Forks, Cross-Listing Index & Changelog Relocation
- v3.6 — Non-Atomic Coherence Pass
- v3.5 — The Symmetry Principle: No Privileged Reality
- v3.4 — Structural Merge & Coherence Pass
- v3.3 — Discovery States, Grand Endeavours & World Truths
- v3.2 — Discovery System Rewrite, UNIQUE Overhaul & Balance Fixes
- v3.0 — Core Game Design Pass
Generated from design/tech_tree.md (v3.127) — edit the document, not the wiki. Home · Breakthrough index · Changelog
Rules
- Discovery Mechanics
- Breakthrough Tiers
- Competing Solutions
- Knowledge Diffusion
- Environmental Modifiers
- Discovery States
- Grand Endeavours
- Eras
- From the start: Fire · Foraging · Stonework · Observation · Social Organization · Seafaring
- Opening in the Primitive era: Farming · Animal Husbandry · Mining · Metallurgy · Warfare · Philosophy and the Arts · Textiles & Materials · Water Management
- Opening in the Ancient era: Construction · Mathematics · Medicine · Trade · Mechanics · Chemistry · Optics
- Opening in the Classical era: Energy Systems
- Opening in the Medieval era: Electricity
- Opening in the Early Modern era: Thermodynamics · Quintessic Physics · Relativity & Cosmology
- Opening in the Modern era: Electronics · Nuclear Physics · Quantum Physics · Rocketry · Materials Science · Genetics · Aeronautics
- Opening in the Atomic era: Computing · Space Engineering
Endgame and worlds
- FTL Endgame
- FTL in Elemental Worlds
- Victories
- World Truths
- Foundational Questions
- Worked Example Worlds
- Game Balance Rules
Reference