There is now a new package in extras-devel which is called fheroes2-demodata, which contains demodata for fheroes2. It contains one map for the game.

You can just install the demodata package if you want to play the game right away, the actual game will be installed with it.

if you have the original files, then just install the fheroes2 package and copy the data and maps files to /opt/fheroes2/files/data and /opt/fheroes2/files/maps.

You can also move the data files to MyDocs if you want, but then you have to modify the fheroes2.cfg file in ~/.fheroes2/ to point to the new location.

Here's a screenshot from the demo: