No, you can't play games on the Linux platform because the application was released only for Windows operating systems. If you click Download on the official page, an EXE file will be provided to you.
Unfortunately, it's not possible to run it through an emulator like Wine, because GameXN requires Skype and even if you manage to install Skype, the add-on won't know to install itself into the program's database.
For additional information, I recommend getting in contact with the official developer using the following form: http://www.gamexn.com/ContactUs
