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Description

Further increases the defense of siege units.

Upgrade Table

Internal clipboard Please note
The research times listed below assume no research bonuses are active, such as those from technologies, alliance technologies, or VIP perks. While we cannot predict your research time, it will likely be less.
Level Siege Defense Requirements Costs Time Power
1 +1.0% Ballistics Level ?
Academy Level 23
Resource icon food 400.0K
Resource icon wood 400.0K
Resource icon stone 300.0K
Resource icon gold 200.0K
10h 48m 5,055
2 +2.0% Heavy Frame Level 1
Academy Level 23
Resource icon food 600.0K
Resource icon wood 600.0K
Resource icon stone 450.0K
Resource icon gold 300.0K
21h 36m 13,415
3 +3.0% Heavy Frame Level 2
Academy Level 23
Resource icon food 900.0K
Resource icon wood 900.0K
Resource icon stone 675.0K
Resource icon gold 450.0K
1d 19h 27,510
4 +4.0% Heavy Frame Level 3
Academy Level 23
Resource icon food 1.35M
Resource icon wood 1.35M
Resource icon stone 1.01M
Resource icon gold 675.0K
3d 14h 51,765
5 +5.0% Heavy Frame Level 4
Academy Level 24
Resource icon food 2.03M
Resource icon wood 2.03M
Resource icon stone 1.52M
Resource icon gold 1.01M
7d 5h 94,373
6 +7.0% Heavy Frame Level 5
Academy Level 24
Resource icon food 3.04M
Resource icon wood 3.04M
Resource icon stone 2.28M
Resource icon gold 1.52M
14d 10h 170,726
7 +9.0% Heavy Frame Level 6
Academy Level 24
Resource icon food 4.56M
Resource icon wood 4.56M
Resource icon stone 3.42M
Resource icon gold 2.74M
28d 19h 312,421
8 +11.0% Heavy Frame Level 7
Academy Level 24
Resource icon food 6.84M
Resource icon wood 6.84M
Resource icon stone 5.13M
Resource icon gold 4.10M
57d 14h 574,730
9 +14.0% Heavy Frame Level 8
Academy Level 24
Resource icon food 10.25M
Resource icon wood 10.25M
Resource icon stone 7.70M
Resource icon gold 6.15M
115d 5h 1,067,727
10 +20.0% Heavy Frame Level 9
Academy Level 24?
Resource icon food ?
Resource icon wood ?
Resource icon stone ?
Resource icon gold ?
 ? 2,006,287

Upgrade Rewards

Advanced Research — Research Heavy Frame in the Academy (edit)
Level Reward
Resource icon food Food Resource icon wood Wood Resource icon stone Stone Resource icon gold Gold
1 1,200 1,200 900 1,100
2  ?  ?  ?  ?
3  ?  ?  ?  ?
4  ?  ?  ?  ?
5  ?  ?  ?  ?
6  ?  ?  ?  ?
7  ?  ?  ?  ?
8  ?  ?  ?  ?
9  ?  ?  ?  ?
10  ?  ?  ?  ?
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