Sorry forgot to mention which version. It is GOG.

Download NEW version as GOG/Other version have both been updated. Read post #1
for update version numbers, re-adjusted small installer read better.

So this does full books 1-5 and does same sizes DVD for the GOG version as well ??

yes its full book 1-5 the sizes 'may' not quite be identical as gog version isn't quite uptodate as the other release is.

The "other installer" version is for 32bits, 64bits or both???

EXE Dreamfall Chapters.exe is in root of game folder. Your guess is good as mine. Its that the GOG version has reg entries to run, like all gog games, they wont run/update without them.

Dreamfall Chapters: The Final Cut

{App}\Dreamfall Chapters.exe

no Redist
Steam version x64 is 18.3GB English Only

Update if you have time. Thanks

Conversion Result with srep,exe,exe2,delta,lzma is 2DVDs

Doesn't really need to be updated, except maybe to latest CIUV2 version.
It will already compress what you have installed, EXE is exactly what you wrote.