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[Schocker]

Or just add this to the colobot.ini configuration file:

Code:

[Language]
Lang=pl

The thing is this file can't be easily reached by the user in OS X (starting with OS X 10.7 Lion). It is located in ~/Library, which, by default, is hidden. To get to it, you either need to open the Finder and Press Cmd+Shift+G (or choose Go -> Go To Folder... (Idź -> Idź do katalogu...) from the top menu), type "~/Library" there and press Enter. Only then can you navigate to the "Application Support" and find the "colobot" folder there (along with the .ini file).

If you are using Mavericks or Yosemite (or El Capitan, generally anything 10.9+), you can also choose to simply show this folder in Finder. To do this, open you user folder and from the top menu choose View -> Show View Options (Widok -> Pokaż opcje widoku; or press Cmd+J). Check the "Show Library Folder" ("Pokaż katalog Biblioteki") option (it can be found at the bottom of the window).