Johnson444: It would be a lot easier if players could just download a single .exe for their games instead of dozens of seperate files for each game. Oblivion for example could easily just fit on a single .exe but they break it up into 3 parts which is incredibly annoying.
Lots of reasons, good and bad, and it’s been asked many times.
For example, older systems do t like files bigger than 4gb.
Downloading parts risk less corruption than one big file.
Also, in theory if GOG did it properly and properly compressed them into chunks, rather than massive redownloads you could just download the bits that changed.
For me, I don’t mind the separate parts at all, 3 clicks for oblivion rather than one, wow, so much heartache. If that’s too much trouble use gogrepo or galaxy (as that is effectively what a client is, lazy peoples wares, too much click 3 times just click play).
And if that sounds a bit sarcastic it is, there are far far worse issues like poor compression, not splitting out language packs and other components, no changelog etc. that rank higher than this.