History Line 1914-1918
History Line 1914-1918 is a turn-based strategy game released in 1992 for Amiga and PC by German BlueByte GmbH. It was published in the U.S. in 1993 under the variant title Great War: 1914-1918. The game is a spin-off of the better-known Battle Isle series, which moves the action to the First World War. Therefore it is technically based on the first Battle Isle game, released a year earlier.
The following file formats are used by this game.
|*.fin||Battle Isle / History Line map format||These files contain the data for the maps (landscape and starting positions of the units)|
|*.shp||Battle Isle / History Line map format||Information about buildings (raw material revenue, contained units, etc.).|
|*.lbm/*.iff||LBM Format||Planar BitMap (PBM) LBM files used for fullscreen images and backgrounds.|
|parts.lib||Battle Isle / History Line library format||Library file for 8 bpp terrain tile graphics (summer)|
|partw.lib||Battle Isle / History Line library format||Library file for 8 bpp terrain tile graphics (winter)|
|unit.lib||Battle Isle / History Line library format||Library file for 4 bpp unit tile graphics|
|*.pal||VGA Palette||8-bit VGA palette|
The savegames are stored as 00.dat to 09.dat in the game directory. The files contain all data for the running game in binary format. Most of the data is a direct copy of the RAM contents.
All data files of the game are compressed with Turbo Packer by Wolfgang Meyerle (TPWM compression) and must be unpacked before the file contents can be modified. Fortunately, the game checks whether the files are compressed or not and accepts the data files uncompressed as well. Therefore, modified files do not have to be compressed again.