The commercial remake of Ballerburg (Ballerburg: Castle Siege
) was without any acknowledgement or credits to the original author. Even in their game forum, any acknowledgement to the monochrome Atari ST game was denied. In a response to a direct request from the programmer of the 1987 Ballerburg game to ASCARON
, the company claimed their lawyers have checked before release that he cannot make any claims. As compensation, he was sent two copies of the commercial game.
was released as a public domain program with the request to send 20 DM (~10€) to the author. He received 159 letters with the money, the last one in 2012.