From Outscape Wiki
|Unlocks:||Tier 3 Entertainment Center|
Researching the Social Theories technology allows the player to upgrade their Tier 2 Entertainment structures to Tier 3, the highest level possible for these buildings. These upgrades are both expensive and time-consuming, and mid-game players should build more Tier 1 and 2 structures instead if they can. However, as Corruption worsens in the late-game, the Tier 3 version will become necessary to mitigate this happiness penalty more efficiently.