Advanced Protection I

Base reference costs and prerequisites. Supported through level 5; each row shows an explicit upgrade transition.

Upgrade costs

Advanced Protection I base upgrade costs
From → To	Coins	Base work
0 → 1	8,255,600	2d 9h 16m
1 → 2	8,255,600	2d 9h 16m
2 → 3	13,209,000	3d 2h 27m
3 → 4	13,209,000	3d 2h 27m
4 → 5	19,813,600	4d 47m

Requirements by target level

Level 1

Barracks Expansion I level 1
Focused Training I level 1
(Scholar Tower I level 18 OR Scholar Tower II level 18)

Level 2

(Scholar Tower I level 18 OR Scholar Tower II level 18)

Level 3

(Scholar Tower I level 19 OR Scholar Tower II level 19)

Level 4

(Scholar Tower I level 19 OR Scholar Tower II level 19)

Level 5

(Scholar Tower I level 20 OR Scholar Tower II level 20)

Reference research rows describe the level being reached. Prerequisites are expanded by the planner, including shared requirements once and all required building gates.

Reference snapshot: 24 October 2026. Community table agreement does not mean every value was independently verified in-game. View sources and uncertainty.