To build and run this appliation you need:
After building run the applicaion as follows: java -Djava.library.path="./lin64" -jar "./space_conflicts_empires.jar"
Actually I have no clue how I bunbled the distribution prefixes back then. Simply look at this preset.
Maybe it is already enough to then run the newly build thing.
This is not the source code of the game as shwon in this video. As this is a new revision after splitting game and engine code into seperate projects.
The original original source code unfortuanlety got lost. But you may recive it by de-compiling the old jars from here.