I have an upgrade ^ symbol on Aqueduct and Amphitheatre. I know the Aqueduct upgrade will give me Hydro Plant and came from Robotics, but what about the Amphitheater? It's not mentioned in the wiki.
1 Answer
Just tried it: it turns into a Broadcast Tower that works like Amphitheatre but more effective. This reddit thread has some info.
The popup window says Culture 5/sec, Unhappiness reduction -75%, Max Culture 525.
As opposed to Amphitheatre 0.005/tick (=?), Unhappiness reduction -4.8%, Maximum Culture +50
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