Luxury happiness

[Tinky Winky]

Does anyone understand how luxuries bring happiness to a city, i.e. the number of happy faces appearing next to it? It seems to me that the longer a luxury is provided to a city, the more happiness it generates. Like how culture for an improvement increases over time.

Does anyone have any different observations?

 

[shirleyrocks]

I'm pretty sure time doesn't have anything to do with it. The greater the variety of luxuries, the more effective they are. Your first two different luxuries are worth 1 happy face each. The second 2 different luxuries are each worth 2 happy faces. Your 5th and 6th different luxuries are each worth 3. 7 and 8 are worth 4 happy faces each. So if you have all 8 luxuries you're in nice shape.

 

[Ferd]

If you don't have a Marketplace in your city, you only get one happy face per different type of luxury. After you build a marketplace you get the nice little pyramid shirleyrocks was talking about. You max out at 20 smileys if you have all 8.