Base Game Object Assignments - Heliomance/Uncharted-Horizons GitHub Wiki

_{Design document §7}

Because this mod replaces the science tech tree with the Focus/Insight/breakthrough system while leaving Unciv's Policy and Religion systems untouched, every wonder, building, tile improvement, and unit that Civ V/Unciv normally gates behind a technology must instead be gated behind a breakthrough — otherwise it would be available from turn one or never at all. (Policy branches need no such treatment: they unlock by era, and eras are reached by discovering breakthroughs, so they remain reachable automatically.)

The tables below assign every base-game object (wonders, buildings, tile improvements, and units) from the Civ V – Gods & Kings ruleset to the breakthrough that should unlock it. The middle column records the object's original Unciv requiredTech for provenance; the assignment picks the breakthrough that best matches that tech's era and theme. Where a breakthrough already names the building in its Unlocks column (e.g. CO01 Granary, WM05 Water Mill, OP03 Observatory, SF08 Harbor, MC04 Windmill, ES06 Nuclear Plant), this table simply confirms that pairing.

Wonder	Base-game unlock tech	Assigned Breakthrough
Temple of Artemis	Archery	WA03
Stonehenge	Calendar	CU02
The Great Library	Writing	SO04
The Pyramids	Masonry	CU02
Mausoleum of Halicarnassus	Masonry	CU02
Statue of Zeus	Bronze Working	ME02
The Great Lighthouse	Optics	SF03
Hanging Gardens	Mathematics	WM02
Terracotta Army	Construction	WA26
The Oracle	Philosophy	O06
Petra	Currency	TR17
Great Wall	Engineering	WA06
Colossus	Iron Working	ME04
Hagia Sophia	Theology	CU15
Great Mosque of Djenne	Theology	CU15
Chichen Itza	Civil Service	SO13
Machu Picchu	Guilds	SO10
Angkor Wat	Education	CU06
Alhambra	Chivalry	CO24
Notre Dame	Physics	CO06
Sistine Chapel	Acoustics	CU07
Forbidden Palace	Banking	SO11
Leaning Tower of Pisa	Printing Press	MC06
Himeji Castle	Gunpowder	WA10
Taj Mahal	Architecture	CO06
Porcelain Tower	Architecture	CO06
Kremlin	Metallurgy	CO25
The Louvre	Archaeology	PH14
Big Ben	Industrialization	MC08
Brandenburg Gate	Military Science	WA28
Eiffel Tower	Radio	EN11
Statue of Liberty	Replaceable Parts	MC10
Neuschwanstein	Railroads	CO23
Cristo Redentor	Plastics	CH07
Pentagon	Combined Arms	WA20
Sydney Opera House	Ecology	EN11
Great Firewall	Computers	CP06
CN Tower	Telecommunications	EN11
Hubble Space Telescope	Satellites	RK05
United Nations	Globalization	CP04

National Wonder	Base-game unlock tech	Assigned Breakthrough
Palace	—	Ungated (capital / victory project)
Circus Maximus	Horseback Riding	AH03
National College	Philosophy	O06
National Epic	Drama and Poetry	CU14
Heroic Epic	Iron Working	WA26
Grand Temple	Theology	CU15
National Treasury	Guilds	SO11
Oxford University	Education	CU06
Ironworks	Machinery	ME08
Hermitage	Architecture	CU07
National Intelligence Agency	Radio	EN11
Manhattan Project	Atomic Theory	NP05
Apollo Program	Rocketry	RK04
Utopia Project	—	Ungated (capital / victory project)

Building	Base-game unlock tech	Assigned Breakthrough
Monument	—	SO02
Stele	—	SO02
Granary	Pottery	CO01
Shrine	Pottery	F02
Pyramid	Pottery	F02
Stone Works	Calendar	S03
Library	Writing	SO04
Paper Maker	Writing	TX10
Circus	Trapping	O09
Water Mill	The Wheel	WM05
Floating Gardens	The Wheel	FA07
Walls	Masonry	S03
Walls of Babylon	Masonry	S03
Barracks	Bronze Working	WA01
Krepost	Bronze Working	WA01
Lighthouse	Optics	SF03
Stable	Horseback Riding	AH03
Courthouse	Mathematics	SO06
Colosseum	Construction	CO02
Temple	Philosophy	CU02
Burial Tomb	Philosophy	CU02
Mud Pyramid Mosque	Philosophy	CU02
Amphitheater	Drama and Poetry	CU05
Market	Currency	TR02
Bazaar	Currency	TR02
Mint	Currency	ME17
Aqueduct	Engineering	WM02
Garden	Theology	G07
Workshop	Metal Casting	MC19
Longhouse	Metal Casting	MC19
Forge	Metal Casting	ME-B
Harbor	Compass	SF08
University	Education	CU06
Wat	Education	CU06
Castle	Chivalry	CO24
Mughal Fort	Chivalry	CO24
Armory	Steel	ME18
Observatory	Astronomy	OP03
Opera House	Acoustics	CU07
Ceilidh Hall	Acoustics	CU07
Bank	Banking	SO11
Satrap's Court	Banking	SO11
Constabulary	Banking	SO16
Theatre	Printing Press	CU07
Seaport	Navigation	SF19
Windmill	Economics	MC04
Coffee House	Economics	SO11
Arsenal	Metallurgy	CO25
Museum	Archaeology	PH14
Public School	Scientific Theory	SO16
Factory	Industrialization	CO10
Military Academy	Military Science	WA28
Hospital	Biology	MD05
Stock Exchange	Electricity	TR09
Hydro Plant	Electricity	WM06
Police Station	Electricity	SO16
Stadium	Refrigeration	TH02
Broadcast Tower	Radio	EN11
Military Base	Replaceable Parts	CO11
Research Lab	Plastics	CH06
Medical Lab	Pharmaceuticals	MD06
Solar Plant	Ecology	ES07
Recycling Center	Ecology	ES13
Nuclear Plant	Nuclear Fission	ES06
Bomb Shelter	Telecommunications	SE03
Spaceship Factory	Robotics	MC12
Cathedral	—	Faith-purchased worship building — gated by Belief, not a breakthrough
Monastery	—	Faith-purchased worship building — gated by Belief, not a breakthrough
Mosque	—	Faith-purchased worship building — gated by Belief, not a breakthrough
Pagoda	—	Faith-purchased worship building — gated by Belief, not a breakthrough

The ruleset derivation changes these canonical requiredBuilding values. Every requirement must name a safe predecessor: one whose row is certain to come first, or a CORE row of the same or an earlier era that is reachable wherever the dependent is (battery check 13). Vanilla chains its culture and happiness buildings rung by rung, for pacing rather than realism — a museum does not need an opera house. In this tree the middle rungs sit on STANDARD rows, so a rung-by-rung chain could leave a top building unbuildable. Instead a top rung requires its line's first rung: cheap, always reachable, and still no way to buy only the best building. The Broadcast Tower needs nothing, because its +33% Culture multiplies whatever the city already has. The Military Base needs a Castle rather than an Arsenal (v3.125): it comes with Reinforced Concrete, which does not require Star Fort, the Arsenal's row, so the defensive line skips only its STANDARD rung.

Building	Vanilla requires	Fork requires
Opera House	Amphitheater	Monument
Ceilidh Hall	Amphitheater	Monument
Museum	Opera House	Monument
Stadium	Theatre	Colosseum
Broadcast Tower	Museum	—
Military Base	Arsenal	Castle

Build time is the invariant: the fork's extra Production buys breadth, a longer building list, not a faster game. Counting buildings alone, a fork city has about 1.3× base Civ V's Production from the Medieval era; counting its worked tiles too, which both games share, it has only about 1.05–1.2×, and it is that whole-city ratio that sets how long anything takes. Fork building specs are priced on vanilla's scale by value: the era's typical canonical building cost (Primitive 50, Ancient 75, Classical 100, Medieval 140, Early Modern 250, Modern and Atomic 500, Space 750) × (value points ÷ 4), clamped between a quarter and one and a half times that cost and rounded to 5. Value points: 1 per flat yield, 1 per 10% bonus, 1 per specialist slot, 1 per 5 city Strength or 50 city HP, a tile or per-population unique at its typical-city yield, and 1 for any other unique. Upkeep follows vanilla's rate for the era, per 100 cost: Primitive 2.5, Ancient 1.33, Classical 1.17, Medieval 0.85, Early Modern 0.8, Modern to Space 0.55. A UNIQUE replacement costs what its base costs, as vanilla's unique buildings do. The v3.77 spaceship stack — the launch complex, the Orbital Shipyard and the exotic-component buildings — keeps its tuned costs. The ruleset derivation then multiplies every cost by its era's row below, canonical and fork alike, the era being that of the row that grants the object. Every building shares one multiplier, so none is a bargain per point. The building column is solved era by era so that, by the end of every fork era, the fork's buildings have taken about 1.1× the share of a city's Production that base Civ V's had taken by the same turn (the extra tenth for breadth). The comparison is by turn, not by era: since v3.108 the fork's eras are its own (§2, Era boundaries) and no longer line up with base Civ V's, and an era-against-era comparison would have let fork cities spend 20–55% more of their Production on buildings than base cities at the same point in the game. A city's Production here counts its worked tiles (1.5 per citizen, plus 2 from the city centre — an assumption) as well as its buildings, with percentage bonuses applied to the whole, over the era's length from the era model below. The Ancient and Classical eras share one value, because the Ancient surplus is canonical Classical buildings on historically Ancient rows, a timing shift gone by the end of the Classical era. The unit column is the era's whole-city Production ratio, rounded to 0.05, so units, wonders and spaceship parts take base Civ V's time. Unciv derives purchase prices from production cost, so Gold prices follow both columns. The Space era carried about five times base Civ V's building load at value price, since base adds almost nothing in its last era. Consolidation (v3.92) brought that to about 3.4 times — the Planetary Defense Network became a national wonder, the Orbital Depot an upgrade of the Asteroid Mining Station, and the Quantum Network a bonus of its own breakthrough — and the Space row is solved on what remains. Most of the rest is the Fusion Plant upgrade; base Civ V has no Space-era plant.

The Power Plant slot holds one plant at a time, so each era adds its best new plant once, as the city's upgrade. Infrastructure for one city — capital-only buildings and the spaceship stack — counts at one city's share, and a building limited per civilisation at its limit's share of the cities.

The era model divides each era's Insight, with the per-city factor, by an empire's Insight per turn: 1 Science per citizen, building Science and the Palace's +3, with percentage bonuses on the whole, for the typical city's population and an assumed 1, 3, 5, 6, 7 and then 8 cities. What the typical city does not model — specialists, trade routes, city-states, policies, wonders, Great Scientists — enters as a factor that ramps from nothing in the Primitive era to about ×2.5 by the Space era, calibrated so that base Civ V's science victory falls around turn 320 (a good player wins by 300; after about 375, someone else usually has). The calibrated base game enters the Ancient era around turn 32, the Classical around 53, the Medieval around 79, the Early Modern around 115, the Modern around 176, the Atomic around 228 and the Space era around 264. The fork's eras have their own boundaries (§2, Era boundaries), drawn so that discoveries come at an even pace up to the Early Modern era (with the opening smoothed in v3.123) and, from the Modern era, at base Civ V's own era timing (v3.122): they last about 33, 36, 28, 36, 49, 46, 36 and 56 turns for the same player. The science victory itself is held to base Civ V's on the same economy, simulated directly (§2, Era boundaries). With the residual factor recalibrated to base Civ V's strong and casual players (about 260 and 400 turns), the fork takes about 262 and 396: its extra Science scales with income, so one Insight curve matches base Civ V at every skill level. The absolute turns rest on the calibration; the comparisons between fork and base, which the table uses, are sturdier, since the same omissions apply to both.

Era	Buildings	Units, wonders and spaceship parts
Primitive	×0.72	×1.00
Ancient	×0.72	×1.05
Classical	×0.72	×1.00
Medieval	×0.86	×1.10
Early Modern	×0.64	×1.10
Modern	×0.52	×1.20
Atomic	×0.48	×1.15
Space	×0.45	×1.20
Interstellar	×0.45	×1.20

Interstellar has no base Civ V era to solve against, so it takes the Space values. The values were solved for v3.108's era timing; v3.122 moved the Modern, Atomic and Space eras (on a good economy, the Atomic era now from about turn 228 and the Space era from about 264 to 320) and v3.123 the earlier ones by a few turns (the Ancient era now ends around turn 69 rather than 62), so they are to be re-solved.

Improvement	Base-game unlock tech	Assigned Breakthrough
Farm	Agriculture	G02
Lumber mill	Construction	CO02
Mine	Mining	S04
Trading post	Guilds	TR17
Camp	Trapping	O03
Oil well	Biology	MI07
Offshore Platform	Refrigeration	MI07
Pasture	Animal Husbandry	AH02
Plantation	Calendar	G07
Quarry	Masonry	S03
Fishing Boats	Sailing	SF01
Fort	Engineering	WA06
Road	The Wheel	CO03
Railroad	Railroads	CO23
Remove Forest	Mining	S01
Remove Jungle	Bronze Working	S01
Remove Marsh	Masonry	WM02
Moai	Construction	CO02
Terrace farm	Construction	FA15
Polder	Guilds	WM02

Civ-unique units are omitted: in Civ V a unique unit unlocks at the same tech as the generic unit it replaces, so it inherits that unit's breakthrough (e.g. Legion → Swordsman → ME04, Keshik → Knight → WA07). Only the generic ladder is mapped here. Our tree abstracts military progression more coarsely than Civ V's unit ladder, so several late units share a breakthrough or map to the nearest thematic one.

Unit	Base-game unlock tech	Assigned Breakthrough
Worker	Agriculture	Ungated — starting unit
Settler	Agriculture	Ungated — starting unit
Scout	Agriculture	S01
Warrior	Agriculture	S01
Archer	Archery	WA03
Work Boats	Sailing	SF01
Trireme	Sailing	SF05
Chariot Archer	The Wheel	WA08
Spearman	Bronze Working	WA01
Horseman	Horseback Riding	WA07
Catapult	Mathematics	WA05
Composite Bowman	Construction	WA04
Swordsman	Iron Working	ME04
Pikeman	Civil Service	ME05
Galleass	Compass	SF09
Knight	Chivalry	WA27
Crossbowman	Machinery	WA09
Trebuchet	Physics	WA11
Longswordsman	Steel	ME18
Caravel	Astronomy	SF09
Musketman	Gunpowder	WA10
Privateer	Navigation	SF11
Frigate	Navigation	SF11
Lancer	Metallurgy	WA28
Cannon	Chemistry	WA22
Gatling Gun	Industrialization	WA16
Rifleman	Rifling	WA16
Cavalry	Military Science	WA28
Ironclad	Steam Power	SF12
Artillery	Dynamite	CH08
Submarine	Refrigeration	SF13
Great War Infantry	Replaceable Parts	MC10
Triplane	Flight	AE03
Great War Bomber	Flight	AE03
Infantry	Plastics	CH11
Carrier	Electronics	AE03
Battleship	Electronics	ME12
Machine Gun	Ballistics	MC11
Anti-Aircraft Gun	Ballistics	EN04
Landship	Combustion	MC09
Destroyer	Combustion	SF12
Marine	Pharmaceuticals	AE05
Fighter	Radar	EN04
Bomber	Radar	EN04
Paratrooper	Radar	EN04
Tank	Combined Arms	MC09
Anti-Tank Gun	Combined Arms	MC09
Atomic Bomb	Nuclear Fission	NP05
Rocket Artillery	Rocketry	CH13
Mobile SAM	Rocketry	CH13
Guided Missile	Advanced Ballistics	RK02
Nuclear Missile	Advanced Ballistics	NP06
Helicopter Gunship	Computers	AE05
Nuclear Submarine	Telecommunications	SF14
Mechanized Infantry	Mobile Tactics	WA20
Missile Cruiser	Robotics	SF14
Modern Armor	Lasers	ME14
Jet Fighter	Lasers	AE04
Giant Death Robot	Nuclear Fusion	WA21
Stealth Bomber	Stealth	AE07
SS Booster	Advanced Ballistics	RK03
SS Cockpit	Satellites	RK05

These are produced by Great People, Great Generals, or engine mechanics rather than unlocked by tech, so they carry no breakthrough gate:

• Great Person / General improvements: Academy, Landmark, Manufactory, Customs house, Holy site, Citadel.
• Worship buildings (faith-purchased via Beliefs): Cathedral, Monastery, Mosque, Pagoda — gated by the Cathedrals / Monasteries / Mosques / Pagodas follower beliefs. (This is why our former religious-institution breakthroughs — Organised Religion, Ascetic Tradition, Ancestor Veneration — were removed: the Religion system already provides them.)
• Great People (units): Great Artist, Scientist, Merchant, Engineer, Prophet, General, Admiral — generated by Great Person points / faith / policies, not tech.
• Faith-purchased religious units: Missionary, Inquisitor — gated by the Religion system, not a breakthrough.
• Barbarian units: Brute, Galley — not part of any player's research.
• Spaceship parts (SS Booster / Cockpit / Engine / Stasis Chamber): these belong to Civ V's Apollo/spaceship science victory, which this design replaces with the FTL / sub-light system (Section 4). Mapped above for completeness in case a build-a-spaceship victory is retained; otherwise superseded.
• Engine / worker actions (no gate): Remove Fallout, Remove Road, Remove Railroad, Cancel improvement order, Repair, Ancient ruins, City ruins, City center, Barbarian encampment.

Naming-collision note: the base-game faith buildings Cathedral and Pagoda share names with content our tree used to grant, so CO06's building was renamed Basilica and CO20's building Seismic Pagoda to avoid clashing with the belief-purchased Cathedral/Pagoda.