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Research · Defense
Siege Engineering
Trebuchets ranged true before the first stone flies — raises troop attack when breaking a wall further still.
- Entity ID
siege_engineering- Branch
- Defense
- Stat buffed
attack— Attack- Bonus per level
- +1.2%
- Maximum level
- 8
- Bonus at maximum level
- +9.6%
- Power per level
- 84
- Power at maximum level
- 672
- Base study time
- 35 seconds
- Study time at maximum level
- 9m 58s
- Prerequisites
- Siege Craft at level 8
Cost, time and bonus at every level
Siege Engineering runs to level 8, adding +1.2% to attack and 84 power each time. Studying it out costs the four soft resources — the same amount of each — and takes 9m 58s 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 attack | Power | Study time | Each resource | Gems to finish |
|---|---|---|---|---|---|
| 1 | +1.2% | 84 | 35s | 3,000 | 50 |
| 2 | +2.4% | 168 | 53s | 4,200 | 70 |
| 3 | +3.6% | 252 | 1m 19s | 5,880 | 98 |
| 4 | +4.8% | 336 | 1m 58s | 8,220 | 137 |
| 5 | +6% | 420 | 2m 57s | 11,520 | 192 |
| 8 | +9.6% | 672 | 9m 58s | 31,620 | 527 |
Taken from nothing to level 8 that is 28m 45s of raw study and 103,140 of each of food, wood, stone and iron — 412,560 resources in total.
Where it sits in the tree
Siege Engineering belongs to the Defense branch — the walls line — what an attacker has to get through before they reach your granary. It stays locked until Siege Craft reaches level 8. Nothing further in the tree depends on it, so it is a leaf: worth taking for its own bonus, never as a stepping stone.
The road here: Weaponry to level 3 → Armor to level 8 → Fortification to level 5 → Siege Craft to level 8 → Siege Engineering. That is 4 studies standing between a fresh Academy and this one.
| Prerequisite | Level required | Each resource | Study time |
|---|---|---|---|
| Weaponry | 3 | 13,080 | 12m 40s |
| Armor | 8 | 103,140 | 2h 11m |
| Fortification | 5 | 32,820 | 35m 10s |
| Siege Craft | 8 | 103,140 | 2h 19m |
| Total before you may begin | — | 252,180 | 5h 18m |
Related
Guide: Research & the Academy · Research Priorities. Studied at the Maester's Academy. Index: all 66 studies · the whole database.
Rest of the Defense branch: Fortification · Siege Craft · Palisades · Stonework · Watchtowers · Moat Works · Battlements · Portcullis · Curtain Walls · Barbicans · Gatehouses · Counter-Siege · Murder Holes · Arrow Slits
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.