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Research · Defense
Watchtowers
Nothing crosses the fields unseen — raises troop defense.
- Entity ID
watchtowers- Branch
- Defense
- Stat buffed
defense— Defense- Bonus per level
- +1.2%
- Maximum level
- 10
- Bonus at maximum level
- +12%
- Power per level
- 75
- Power at maximum level
- 750
- Base study time
- 30 seconds
- Study time at maximum level
- 20m 20s
- Prerequisites
- Fortification at level 8
Cost, time and bonus at every level
Watchtowers runs to level 10, adding +1.2% to defense and 75 power each time. Studying it out costs the four soft resources — the same amount of each — and takes 20m 20s for the final level alone. Gems are only ever the optional instant finish; the study itself is bought with what your fields already make.
| Level | Total defense | Power | Study time | Each resource | Gems to finish instantly |
|---|---|---|---|---|---|
| 1 | +1.2% | 75 | 1m 55s | 12,000 | 2 |
| 2 | +2.4% | 150 | 2m 30s | 15,600 | 3 |
| 3 | +3.6% | 225 | 3m 14s | 20,280 | 4 |
| 4 | +4.8% | 300 | 4m 13s | 26,364 | 5 |
| 5 | +6% | 375 | 5m 28s | 34,273 | 6 |
| 10 | +12% | 750 | 20m 20s | 127,254 | 21 |
Taken from nothing to level 10 that is 1h 21m of raw study and 511,434 of each of food, wood, stone and iron — 2,045,736 resources in total.
Where it sits in the tree
Watchtowers belongs to the Defense branch — the walls line — what an attacker has to get through before they reach your granary. It stays locked until Fortification reaches level 8. Studying it opens 1 further tech.
| Tech | Branch | Requires this tech at level |
|---|---|---|
| Barbicans | Defense | 5 |
The road here: Weaponry to level 3 → Armor to level 8 → Fortification to level 8 → Watchtowers. That is 3 studies standing between a fresh Academy and this one.
| Prerequisite | Level required | Each resource | Study time |
|---|---|---|---|
| Weaponry | 3 | 47,880 | 40m 47s |
| Armor | 8 | 286,292 | 4h 3m |
| Fortification | 8 | 286,292 | 4h 3m |
| Total before you may begin | — | 620,464 | 8h 48m |
What it eventually opens: 3 studies sit downstream of Watchtowers, counting every remove.
| Study | Steps out | Buffs | At its cap | Study time at cap |
|---|---|---|---|---|
| Barbicans | 1 | defense | +9.6% | 14m 2s |
| Concentric Castles | 2 | defense | +7.2% | 13m 3s |
| The Long Memory | 3 | production_rate | +6% | 10m 57s |
Related
Guide: Research & the Academy · Research Priorities. Studied at the Maester's Academy. Index: all 81 studies · the whole database.
Rest of the Defense branch: Fortification · Siege Craft · Palisades · Stonework · Moat Works · Battlements · Portcullis · Curtain Walls · Barbicans · Gatehouses · Counter-Siege · Murder Holes · Arrow Slits · Siege Engineering · Concentric Castles · Deep Cisterns · Bombardment Doctrine
Every figure above is generated from the shipped game code — the same constants and formulas the running game uses — and regenerated whenever the balance changes. Nothing on this page is hand-typed.