Tropico 4: Modern Times is an add-on for Tropico 4. It mostly adds technologies and buildings which were introduced between the 70s and 90s. While playing, the player can blend in a timeline which shows the year the game world is in. At set points, new technologies are introduced. The time period also has other effects, e.g. during the student protests the player can't get qualified employees from abroad. There are overall 30 new buildings, a new campaign with twelve missions and ten new edicts.