We all know that when we upgrade our combat hero's it makes them more powerful, but what does upgrading..
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We all know that when we upgrade our combat hero's it makes them more powerful, but what does upgrading production hero's do for them? Please.
In general increasing the production heroes Exp level does not improve them but it unlocks access to skills that you can then upgrade to add / increase their benefit. Tap on any of their skills to see what it does and the requirements to unlock it.
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