archive-format

The Legend of Heroes: Trails in the Sky (Nihon Falcom, Windows 2004) measured as a live GOG installation: 141 files, 129 declared and MD5-verified by the offline installer's own manifest, 26 LB DIR/LB DAT archives holding 12,821 dated members from 1998 to 2017, and a program that is 0.3042 % of the download.

File-format and runtime documentation for the PC (Steam) release of FINAL FANTASY TYPE-0 HD - archive format, PSP heritage, and the HexaDrive render layer

Reference implementation and format specification for Tessera (tessera/0.1) — the local-first, text-as-memory archive format of the Cognitive Sibling.

File-format documentation for the PC (Steam) release of Tales of Berseria (2017, non-remastered) - container format, obfuscation analysis, engine heritage

A GOG install of Broken Sword 5 (2014) measured byte by byte: 33 files, 6.6 GB, two undocumented container formats derived and proved, 71,938 members censused, and an engine whose universally-attributed name occurs zero times in the object.

Seven files and 35,266,356 bytes of an installed, never-launched Steam depot. 84.2165 % of it is a headerless AES-128-CBC archive with no prior art: the 4,096-byte index closes three times, the 55 extents sum with residue 0, and the key is an 11-character literal in the executable.