Subject of the question:
How to port saved FreeCiv games from Desktop to Android device?
Contents, summarized:
I play FreeCiv on a Desktop computer where I have various games saved. I have recently acquired an Android device where I would like to resume some of these games
Considering our Help Page specially mentions:
and it is not about … electronic devices, media players, cell phones or smart phones, except insofar as they interface with your computer
I'm really not sure why you're continuing to argue about in comments. The android tag exists to ask questions about problems arising due to interfacing an Android phone with a computer.
The tag wiki makes that clear too:
Unless the device docks with your computer, questions are better on android.stackexchange.com or stackoverflow.com for programming Android applications.
Android Stack ExchangeAndroid Stack Exchange is where you're question is better suited for, since that site pertains to certains specifically on Android