Unlocks Arcuballista in the Siege Workshop.

Upgrade Table

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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 Requirements Costs Time Power
1 Flaming Projectile Level 3
Academy Level 8
Resource icon food 200.0K
Resource icon wood 200.0K
Resource icon stone 150.0K
12h 30m 3,050

Upgrade Rewards

Advanced Research — Research Arcuballista in the Academy (edit)
Level Reward
Resource icon food Food Resource icon wood Wood Resource icon stone Stone Resource icon gold Gold
1 2,700 2,700 2,900 -
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