Defense Drill VII

Base reference costs and prerequisites. Supported through level 10; each row shows an explicit upgrade transition.

Upgrade costs

Defense Drill VII base upgrade costs
From → To	Wood	Food	Coins	Medals	Base work
0 → 1	995,300	995,300	2,687,400	750	19h 33m
1 → 2	995,300	995,300	2,687,400	750	19h 33m
2 → 3	1,592,500	1,592,500	4,299,800	900	1d 1h 25m
3 → 4	1,592,500	1,592,500	4,299,800	900	1d 1h 25m
4 → 5	2,866,500	2,866,500	7,739,700	1,050	1d 9h 3m
5 → 6	2,866,500	2,866,500	7,739,700	1,050	1d 9h 3m
6 → 7	4,586,500	4,586,500	12,383,500	1,200	1d 18h 57m
7 → 8	4,586,500	4,586,500	12,383,500	1,200	1d 18h 57m
8 → 9	7,338,400	7,338,400	19,813,600	1,350	2d 7h 50m
9 → 10	7,338,400	7,338,400	19,813,600	1,350	2d 7h 50m

Requirements by target level

Level 1

Super Reward level 1
(Scholar Tower I level 15 OR Scholar Tower II level 15)

Level 2

(Scholar Tower I level 15 OR Scholar Tower II level 15)

Level 3

(Scholar Tower I level 16 OR Scholar Tower II level 16)

Level 4

(Scholar Tower I level 16 OR Scholar Tower II level 16)

Level 5

(Scholar Tower I level 17 OR Scholar Tower II level 17)

Level 6

(Scholar Tower I level 17 OR Scholar Tower II level 17)

Level 7

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

Level 8

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

Level 9

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

Level 10

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

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.