TECHNOLOGY · CIVILIZATION-SPECIFIC
Detinets
Castles and Towers replace part of their stone cost with wood.

Overview
Castles and Towers replace part of their stone cost with wood.
Effect and affected units
Detinets changes replaces 40% of Castles' and towers' stone cost with wood. Read the named target carefully: this effect applies only to the units, buildings, or economy described in its entry. This is the main reason to research it; compare the affected units with the army you expect to field.
Research cost and timing
Research is available in Castle Age at the Castle. The recorded cost is 400 Wood, 200 Gold, and the research time is 40 seconds. Consider whether the upgrade will affect enough units or workers to repay that investment before the match is decided.
Matchup plan: Detinets stone-saving expansion plan
Detinets returns value by reducing the stone burden of Slavic defensive expansion after the first Castle is available. Plan its use around several future structures rather than a single isolated placement Secure the first Castle and research Detinets when you intend to add more Castles or towers. Use the saved stone to claim another resource zone, defend a second approach, or support additional Boyar production from a broader Castle network. Repairing the initial Castle can also benefit, so maintain it while the economy transitions toward a wider defensive footprint The first Castle must be built before the technology can benefit later structures, so it does not fund its own initial cost in ordinary situations. Do not add towers simply because stone is cheaper; each position still needs vision and a plan for defending siege
Effect and research timing
Castles and Towers replace part of their stone cost with wood. Effect: Replaces 40% of Castles' and towers' stone cost with wood. Research becomes available in: Castle Age; Research at: Castle; Research cost: 400 Wood, 200 Gold; Research time: 40 seconds. This research is restricted to its named civilization, so it is part of that faction’s identity rather than a shared option. This is most relevant when the match plan includes defending a position or applying pressure to structures.
Research details
- Age
- Castle Age
- Research building
- Castle
- Research time
- 40 seconds
Research requirements and effects for this entry.
- Focus
- Unique technology · Slavs
- Signature / category
- Unique technology · Slavs
- Release / context
- Civilization research
- Region
- Civilization-specific
- Classification
- Unique technologies