Trine 2: Complete Story 3-Pack where is the trick?

[AlphariM]

Hi to all. I've never had Trine 2 or Trine 1 on my steam or computer. I decided to safe money buy buing Trine 2: Complete Story 3-Pack and share between my 2 friends. I thought tha 3-Pack means 3 copies of Trine 2. 1 for me and 2 for friends....did I get the name "Trine 2: Complete Story 3-Pack" or "3-Pack" means something else, because I can not found other 2 copies. Please help me and explain how it works.

[Space Cowboy]

Have you checked your inventory? Extra copies are like tradeable items.

[AlphariM]

Oh God. I'm so stupid. thank you man. _)