Germany

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Ports of Call is a business simulation game developed by German duo Rolf-Dieter Klein and Martin Ulrich, and published in 1987 by Aegis Interactive Entertainment. It was initially released for AmigaOS, then MS-DOS. Much later, it was converted to Windows, iOS, Android, and as a browser game.

Wikipedia. CC BY-SA 4.0. Updated Jul 17, 2026.