How long does it take to make a game Mac compatible?

[dosp5]

For example how long would you estimate Terraria or Dirt 3 to make he jump. What do you have to do to makea game mac compatible? I guess you would just have to change how the game is read, but I know Jack shit about PC gaming so...

 

[Zac Smith]

I would assume about the same time to port any other game to any other system

 

[EradiusLore]

you have to remember that MAC is only really compatible with a couple of programing languages so if its written in anything like c++/c# then it would take a while