Best Compression Methods for 'Specific' Games. Q&A

[kj911]

Any tools/idea from precompressing old TRS game series? Aka TRS2004 to 2012 games used *.ja archives. Newer TRS2012 SP1 and newer 20xx versions use (probably uncompressed) only *.tzarc game files.

Very old TRS2004 related *.ja extractor added and *.ja archive sample from the TRS2012 game.

In last stage, the overall best methods from *.ja files:

RAZOR only (stdio version) with 1023mb dictionary size, the files shrunked to 4.22GB.

Any rest files use in: xZLib/xtool+msc+delta+srep+lolz or xZLib/xtool+RAZOR

Output size differences abysmal, less than ~0.5MB's compressed size. (RZ used 256MB dict size. Larger probably get in 0.5-2MB extra size reduction.) The game not easily fit to onto ONE DVD5 sizes.