Old World Reference
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📜 Improvement Finished Events

60 events

← All story events Trigger Events that fire on the Improvement Finished trigger.

How yield rewards scale ↗ turn

A yield reward like +40 Science +10/city ↗turn grows with your cities and the turn. You receive:

(base + per-city × your cities) × turn multiplier

  • Per-city adds that much for every city you own (the rival's cities for Steal-Research-style effects).
  • Turn multiplier is ×1 up to turn 60, then turn ÷ 60: ×1.5 at turn 90, ×2 at turn 120, ×3.3 at turn 200.

Each chip shows the ×1 (base) value. Hover a yield chip for a cities × turn table of the real reward. For example, +40 Science +10/city with 4 cities pays 80 in the early game, 120 at turn 90 and 160 at turn 120. The mission pages also have a live calculator. The game's "Tiny", "Small", "Average" and "Large" rewards are shown here as their real numbers.

⚠ Weights are not in-game odds. Each event also needs its character and empire conditions to hold, and some of those are hidden in game, so how often it really fires can differ a lot from its weight. Community tracking bears this out.

Achievement Improvement Finished · The Lighthouse CM ✓
Once per game City Us City AlexandriaCity Lighthouse
As it opens, before you choose Steam achievement: Alexandria Lighthouse
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Musaeum CM ✓
Once per game City Us City AlexandriaCity Musaeum
As it opens, before you choose Steam achievement: Alexandria Musaeum
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Acropolis CM ✓
Once per game City Us City AthensCity Acropolis
As it opens, before you choose Steam achievement: Athens Acropolis
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Hanging Gardens CM ✓
Once per game City Us City BabylonCity Hanging Gardens
As it opens, before you choose Steam achievement: Babylon Hanging Gardens
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Ishtar Gate CM ✓
Once per game City Us City BabylonCity Ishtar Gate
As it opens, before you choose Steam achievement: Babylon Ishtar Gate
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Hagia Sophia CM ✓
Once per game City Us City ByzantiumCity Hagia Sophia
As it opens, before you choose Steam achievement: Byzantium Hagia Sophia
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · Cothon CM ✓ Wonders and Dynasties
Once per game City Us City CarthagoCity Cothon
As it opens, before you choose Steam achievement: Carthago Cothon
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Via Recta Souk CM ✓
Once per game City Us City DamascusCity Via Recta Souk
As it opens, before you choose Steam achievement: Damascus Via Recta Souk
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Oracle CM ✓
Once per game City Us City DelphiCity Oracle
As it opens, before you choose Steam achievement: Delphi Oracle
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Mausoleum CM ✓
Once per game City Us City HalicarnassusCity Mausoleum
As it opens, before you choose Steam achievement: Halicarnassus Mausoleum
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · Yazilikaya CM ✓ Wonders and Dynasties
Once per game City Us City HattusaCity Yazilikaya
As it opens, before you choose Steam achievement: Hattusa Yazilikaya
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · Heliopolis CM ✓ Wonders and Dynasties
Once per game City Us City HeliopolisCity Heliopolis Wonder
As it opens, before you choose Steam achievement: Heliopolis Heliopolis
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · Mine CM ✓
Once per game City UsPlayer Us Player Hittite
As it opens, before you choose Steam achievement: Hittite Iron
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · Jerwan Aqueduct CM ✓ Wonders and Dynasties
Once per game City Us City JerwanCity Jerwan Aqueduct
As it opens, before you choose Steam achievement: Jerwan Jerwan Aqueduct
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Pyramids CM ✓
Once per game City Us City MemphisCity Pyramids
As it opens, before you choose Steam achievement: Memphis Pyramids
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · Jebel Barkal CM ✓ Wonders and Dynasties
Once per game City Us City NapataCity Jebel Barkal
As it opens, before you choose Steam achievement: Napata Jebel Barkal
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · Royal Library CM ✓ Wonders and Dynasties
Once per game City Us City NinevehCity Royal Library
As it opens, before you choose Steam achievement: Nineveh Royal Library
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Apadana CM ✓
Once per game City Us City PersepolisCity Apadana
As it opens, before you choose Steam achievement: Persepolis Apadana
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · Al Khazneh CM ✓ Wonders and Dynasties
Once per game City Us City PetraCity Al Khazneh
As it opens, before you choose Steam achievement: Petra Al Khazneh
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Colossus CM ✓
Once per game City Us City RhodesCity Colossus
As it opens, before you choose Steam achievement: Rhodes Colossus
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · Colosseum CM ✓ Wonders and Dynasties
Once per game City Us City RomaCity Colosseum
As it opens, before you choose Steam achievement: Roma Colosseum
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Circus Maximus CM ✓
Once per game City Us City RomaCity Circus Maximus
As it opens, before you choose Steam achievement: Roma Circus Maximus
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Pantheon CM ✓
Once per game City Us City RomaCity Pantheon
As it opens, before you choose Steam achievement: Roma Pantheon
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Ziggurat CM ✓
Once per game City Us City UrCity Great Ziggurat
As it opens, before you choose Steam achievement: Ur Great Ziggurat
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Achievement Improvement Finished · The Necropolis CM ✓
Once per game City Us City WasetCity Necropolis
As it opens, before you choose Steam achievement: Waset Necropolis
  • ▸ Achievement.
    (no gates or payload in XML)

✎ Dale Kent

Al-Khazneh Improvement Finished · Al Khazneh CM ✓ Wonders and Dynasties
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +6 Legitimacy
    grants
    BONUS_FINISHED_WONDER_STRONG
    iLegitimacy 6

✎ Josh Unsworth Background reading ↗

Heliopolis Improvement Finished · Heliopolis CM ✓ Wonders and Dynasties
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +8 Legitimacy
    grants
    BONUS_FINISHED_WONDER_LEGENDARY
    iLegitimacy 8

✎ Josh Unsworth Background reading ↗

Holy Site Buddhism Improvement Finished · Holy Site Buddhism CM ✓ Empires of the Indus
Every 0 turns City Us
  • ▸ Our name will reach the heavens.
    +2 Legitimacy
    grants
    BONUS_FINISHED_HOLY_SITE
    iLegitimacy 2

✎ Josh Unsworth Background reading ↗

Holy Site Christianity Improvement Finished · The Church of the Holy Sepulchre CM ✓
Every 0 turns City Us
  • ▸ Our name will reach the heavens.
    +2 Legitimacy
    grants
    BONUS_FINISHED_HOLY_SITE
    iLegitimacy 2

✎ Soren Johnson

Holy Site Judaism Improvement Finished · The Temple of Solomon CM ✓
Every 0 turns City Us
  • ▸ Our name will reach the heavens.
    +2 Legitimacy
    grants
    BONUS_FINISHED_HOLY_SITE
    iLegitimacy 2

✎ Soren Johnson

Holy Site Manichaeism Improvement Finished · The Cao'an CM ✓
Every 0 turns City Us
  • ▸ Our name will reach the heavens.
    +2 Legitimacy
    grants
    BONUS_FINISHED_HOLY_SITE
    iLegitimacy 2

✎ Soren Johnson

Holy Site Zoroastrianism Improvement Finished · The Adur Burzen-Mihr CM ✓
Every 0 turns City Us
  • ▸ Our name will reach the heavens.
    +2 Legitimacy
    grants
    BONUS_FINISHED_HOLY_SITE
    iLegitimacy 2

✎ Soren Johnson

The Acropolis Improvement Finished · The Acropolis CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +6 Legitimacy
    grants
    BONUS_FINISHED_WONDER_STRONG
    iLegitimacy 6

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Apadana Improvement Finished · The Apadana CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +4 Legitimacy
    grants
    BONUS_FINISHED_WONDER_DEVELOPING
    iLegitimacy 4

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Circus Maximus Improvement Finished · The Circus Maximus CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +8 Legitimacy
    grants
    BONUS_FINISHED_WONDER_LEGENDARY
    iLegitimacy 8

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Colosseum Improvement Finished · Colosseum CM ✓ Wonders and Dynasties
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +8 Legitimacy
    grants
    BONUS_FINISHED_WONDER_LEGENDARY
    iLegitimacy 8

✎ Josh Unsworth Background reading ↗

The Colossus Improvement Finished · The Colossus CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +6 Legitimacy
    grants
    BONUS_FINISHED_WONDER_STRONG
    iLegitimacy 6

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Cothon Improvement Finished · Cothon CM ✓ Wonders and Dynasties
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +6 Legitimacy
    grants
    BONUS_FINISHED_WONDER_STRONG
    iLegitimacy 6

✎ Josh Unsworth Background reading ↗

The Hagia Sophia Improvement Finished · The Hagia Sophia CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +8 Legitimacy
    grants
    BONUS_FINISHED_WONDER_LEGENDARY
    iLegitimacy 8

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Hanging Gardens Improvement Finished · The Hanging Gardens CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +2 Legitimacy
    grants
    BONUS_FINISHED_WONDER_WEAK
    iLegitimacy 2

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Hill Fort Improvement Finished · Hill Fort CM ✓ Empires of the Indus
Once per game
  • ▸ With this wonder, my legacy will endure.
    +8 Legitimacy
    grants
    BONUS_FINISHED_WONDER_LEGENDARY
    iLegitimacy 8

✎ Josh Unsworth Background reading ↗

The Ishtar Gate Improvement Finished · The Ishtar Gate CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +4 Legitimacy
    grants
    BONUS_FINISHED_WONDER_DEVELOPING
    iLegitimacy 4

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Jebel Barkal Improvement Finished · Jebel Barkal CM ✓ Wonders and Dynasties
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +4 Legitimacy
    grants
    BONUS_FINISHED_WONDER_DEVELOPING
    iLegitimacy 4

✎ Josh Unsworth Background reading ↗

The Jerwan Aqueduct Improvement Finished · Jerwan Aqueduct CM ✓ Wonders and Dynasties
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +2 Legitimacy
    grants
    BONUS_FINISHED_WONDER_WEAK
    iLegitimacy 2

✎ Josh Unsworth Background reading ↗

The Lighthouse Improvement Finished · The Lighthouse CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +4 Legitimacy
    grants
    BONUS_FINISHED_WONDER_DEVELOPING
    iLegitimacy 4

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Mahavihara Improvement Finished · The Mahavihara CM ✓ Empires of the Indus
Once per game
  • ▸ With this wonder, my legacy will endure.
    +4 Legitimacy
    grants
    BONUS_FINISHED_WONDER_DEVELOPING
    iLegitimacy 4

✎ Josh Unsworth Background reading ↗

The Mausoleum Improvement Finished · The Mausoleum CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +6 Legitimacy
    grants
    BONUS_FINISHED_WONDER_STRONG
    iLegitimacy 6

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Monumental Buddhas Improvement Finished · Monumental Buddhas CM ✓ Empires of the Indus
Once per game
  • ▸ With this wonder, my legacy will endure.
    +6 Legitimacy
    grants
    BONUS_FINISHED_WONDER_STRONG
    iLegitimacy 6

✎ Josh Unsworth Background reading ↗

The Musaeum Improvement Finished · The Musaeum CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +6 Legitimacy
    grants
    BONUS_FINISHED_WONDER_STRONG
    iLegitimacy 6

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Necropolis Improvement Finished · The Necropolis CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +4 Legitimacy
    grants
    BONUS_FINISHED_WONDER_DEVELOPING
    iLegitimacy 4

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Oracle Improvement Finished · The Oracle CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +2 Legitimacy
    grants
    BONUS_FINISHED_WONDER_WEAK
    iLegitimacy 2

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Pantheon Improvement Finished · The Pantheon CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +8 Legitimacy
    grants
    BONUS_FINISHED_WONDER_LEGENDARY
    iLegitimacy 8

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Pyramids Improvement Finished · The Pyramids CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +2 Legitimacy
    grants
    BONUS_FINISHED_WONDER_WEAK
    iLegitimacy 2

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Royal Library Improvement Finished · Royal Library CM ✓ Wonders and Dynasties
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +4 Legitimacy
    grants
    BONUS_FINISHED_WONDER_DEVELOPING
    iLegitimacy 4

✎ Josh Unsworth Background reading ↗

The Stupa Improvement Finished · Stupa CM ✓ Empires of the Indus
Once per game
  • ▸ With this wonder, my legacy will endure.
    +2 Legitimacy
    grants
    BONUS_FINISHED_WONDER_WEAK
    iLegitimacy 2

✎ Josh Unsworth Background reading ↗

The Via Recta Souk Improvement Finished · The Via Recta Souk CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +8 Legitimacy
    grants
    BONUS_FINISHED_WONDER_LEGENDARY
    iLegitimacy 8

✎ Soren Johnson, Josh Unsworth Background reading ↗

The Yazilikaya Improvement Finished · Yazilikaya CM ✓ Wonders and Dynasties
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +2 Legitimacy
    grants
    BONUS_FINISHED_WONDER_WEAK
    iLegitimacy 2

✎ Josh Unsworth Background reading ↗

The Ziggurat Improvement Finished · The Ziggurat CM ✓
Every 0 turns City UsPlayer Us
  • ▸ With this wonder, my legacy will endure.
    +2 Legitimacy
    grants
    BONUS_FINISHED_WONDER_WEAK
    iLegitimacy 2

✎ Soren Johnson, Josh Unsworth Background reading ↗

Tutorial: Trade Network Improvement Finished · Hamlet CM ✓
Once per game City Us
  • ▸ I will extend my Trade Network to gain more MoneyMoney and increase HappinessHappiness!
    (no gates or payload in XML)

✎ Gabe Campbell

Tutorial: Training Improvement Finished · Barracks CM ✓
Once per game City Us
  • ▸ I will train my Melee Units at a BarracksBarracks so they gain more Xp!
    (no gates or payload in XML)

✎ Gabe Campbell