
1) Atari ST game 2) Linux game
Found on
https://www.crosswordclues.com/clue/ballerburg

Ballerburg is a turnbased Artillery game from 1987, written in C by Eckhard Kruse for the Atari ST. Being a public domain program, it was distributed free of charge. Ballerburg was designed for two players, both of which can be human or computer-controlled. In the game, two enemy kingdoms, separated by a mountain, try to destroy the castle of the ...
Found on
http://en.wikipedia.org/wiki/Ballerburg
No exact match found.