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

[hydefromt70s]

Originally Posted by dixen

The Walking Dead: The Telltale Definitive Series`(RUS/ENG)

*.ttarch2 (without prefixes _ms_ & _voice_) - decrypt with key and QBMS
XTool+srep+lzma2 (2019) = 35 > 13 gb
Sound and other files - srep+4x4:lzma

Install size - 45.6 gb
RePack size - 19.06 gb
Install time - 60 min.

Decrypt key

For QBMS

For ttarchext

I'm planning to make may own repack of this game version and have few questions.
Obviously game is encrypted so it won't compress well until being decrypted first. If I decrypt the game first I understand I will get decrypted and unpacked game files – does the game work properly with unpacked files? Is there anyway to compress game with decryption on the fly?