Spies/Treason is a Castle technology. Spies (random map games) shows you everything enemy units and buildings can see. It costs 200 gold for each enemy villager. Treason (Regicide games) shows the position of enemy Kings for a few seconds and costs 400 gold each time it is used.
- Building: Castle
- Age: Imperial Age
- Cost: 200 gold (Spies: per enemy villager)
- Research time: 1 second
- Available to: every civilization
Shows you everything the opponent can see. Expensive, so it is usually researched late in long games to find the last buildings.
Figures from the game data for Update 185872 (September 2026), at the time of publishing.