It also has the benefit of being able to show metrics and diagnostics right there without having to connect it to another device.

Installers deal with more than just unpacking files into a folder. There are often prerequisite shared libraries that are included in the installer that AREN’T in the game directory, which may or may not need to be installed along with the game depending on if your system already has it.

So just double-clicking the .exe after copying the folder to a new computer is not reliable in the same way GOG’s installers are.

I can’t help but wince at the thought of not seeing the spider before plugging in the ethernet cable…