trigger · num_researched_technologies

Hands-On Usage

num_researched_technologies is commonly used in mods to unlock special decisions, national focuses, or advisors based on a country's technology research progress. For example, it can restrict specific events to trigger or enable advanced military industrial organizations only after a nation has researched sufficient technologies. It can also be integrated into AI weight logic, allowing the AI to make strategic decisions only after reaching a technology accumulation threshold.

# Example: Allow a decision to activate only after researching a certain number of technologies
available = {
    num_researched_technologies > 20
}

Synergy

• [can_research](/wiki/trigger/can_research): Often used together to verify the current researchable state, providing dual validation of technology condition integrity.
• [amount_research_slots](/wiki/trigger/amount_research_slots): Used in conjunction with research slot quantity to distinguish between two dimensions: "has capacity for rapid research" vs. "has already researched how much," making conditions more precise.
• [add_tech_bonus](/wiki/effect/add_tech_bonus): When the technology count condition is met, use this effect to grant additional technology bonuses as rewards or to advance logic.
• [add_research_slot](/wiki/effect/add_research_slot): Commonly paired as a reward effect to unlock additional research slots after a nation accumulates a certain amount of technology, creating a snowball effect in technology design.

Common Pitfalls

1. Confusing comparison operators: Beginners often write num_researched_technologies = 20 (meaning exactly 20) instead of >= 20 or > 19, causing conditions to rarely trigger or behave unexpectedly. Always use comparison operators like >, >=, < based on actual requirements.
2. Overlooking cross-category statistics in the technology tree: This trigger counts the total number of researched technologies across all categories, not the quantity in a specific technology tree (such as army or navy). If you want to restrict technology progress in a specific domain, use more targeted conditions (such as has_doctrine) rather than relying on this trigger.