If you are using the .rar file mentioned, you will need a utility like WinRAR or to extract the contents. For official digital versions, you can find the collection on retailers like Steam or Kalypso Media . Tropico 5 Complete Collection (Unboxing/Breakdown/Demo)
This collection typically upgrades your game with the following content as seen on GOG.com : : Waterborne, Espionage Tropico-5-Complete-Collection.rar
The is the definitive edition of the city-building simulator, bundling the base game with all released expansions and DLCs for over 100 hours of gameplay. Collection Highlights If you are using the