Old World Reference
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📜 Occurrence Start Events

2 events

← All story events Trigger Stories that fire on the Occurrence Start trigger.

How yield rewards scale ↗ turn

A yield reward like +40 Science +10/city ↗turn is not a flat number. The amount you actually receive is:

(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 through turn 60, then ×(turn ÷ 60) after — ×1.5 at turn 90, ×2 at turn 120, ×3.3 at turn 200.

The number on each chip is the ×1 (base) value. Hover a yield chip for a cities × turn table of the real reward. Example — +40 Science +10/city with 4 cities: 80 early game → 120 at turn 90 → 160 at turn 120. The mission pages also have a live calculator. ("Tiny / Small / Average / Large" in the game are just preset base/per tiers — shown here as their real numbers.)

⚠ Weights are not in-game odds. Each story is gated by character/empire conditions (some hidden in-game), so its real frequency is filtered in ways the XML can't predict — community analytics differ a lot from raw weights. Treat the weight as the XML knob, not a probability.

The Flood Affair Occurrence Start Wrath of Gods
Once per game FloodTile Claimed UsCity UsLeader UsUs Tile Market 3 AnyWeakGovernor
  • ▸ I don’t care if [character] finds it unfair. Shut it down.
    +1 WisdomLeader relationship: Estranged From
    grants
    BONUS_GAIN_WISDOM_1
    aiRatings: RATING_WISDOM=1
    BONUS_LEADER_ESTRANGED_FROM
    AddLeaderRelationship RELATIONSHIP_ESTRANGED_FROM
  • ▸ Fair enough, [character]. Do what you want.
    Remembered: Flood FairLeader relationship: Influenced By
    grants
    BONUS_EVENTOPTION_CALAMITIES_FLOOD_START_FAIR_OPTION_OK_CHARACTER_1
    Memory MEMORYCHARACTER_FLOOD_FAIR
    aeBonuses: BONUS_LEADER_INFLUENCED_BY
    ◇ may enable: Fair Well, Always Fair Weather
  • ▸ This is a great idea!
    Remembered: Flood FairLeader relationship: Conspiring With
    gated by
    LeaderSubject SUBJECT_CHARACTER_WEAK
    grants
    BONUS_EVENTOPTION_CALAMITIES_FLOOD_START_FAIR_OPTION_YES_CHARACTER_1
    Memory MEMORYCHARACTER_FLOOD_FAIR
    aeBonuses: BONUS_LEADER_CONSPIRING_WITH
    ◇ may enable: Fair Well, Always Fair Weather

✎ Brodie Frehlich

Track Record Occurrence Start Wrath of Gods
Once per game HurricanePlayer UsNon Leader Us Player CoastExploring
Always Loses trait: ExploringGain trait: Tracker
  • ▸ Welcome back, [character]!
    Leader relationship: Influenced By
    grants
    BONUS_LEADER_INFLUENCED_BY
    AddLeaderRelationship RELATIONSHIP_INFLUENCED_BY
  • ▸ Very impressive. Commission a ship for his future expeditions.
    -30Wood-10/city↗ turn+1 Ship unitGain trait: Famous
    grants
    BONUS_EVENTOPTION_CALAMITIES_HURRICANE_START_TRACKER_SHIP_PLAYER
    aeBonuses: BONUS_WOOD_LOSS_SMALL, BONUS_UNITCLASS_SHIP
    BONUS_GIVE_TRAIT_FAMOUS
    aeAddTraits: TRAIT_FAMOUS

✎ Brodie Frehlich