how do i downlode gog to my chrombook

If you have flashed your BIOS, then you're probably running a Linux distro as Chromebooks don't seem to like windows much.

however if you are using stock ChromeOS.... You can't.

Well, you can download games and whatnot... but you can't install or play it.

Now if you install Crouton (Linux Ubuntu distro that runs on top of ChromeOS) Then again it will be a linux distro you download and install/run.

As for Galaxy, i don't think there's a good Linux port yet, so either way you're probably not getting it.

If you use a Linux distro as rtcvb32 suggested, you need to go to https://www.gog.com/account and click on the game you want. Then, download the installer files from the part that says "DOWNLOAD OFFLINE BACKUP INSTALLERS", and not from the big blue button right above.

If you're using a Linux distro and this distro is compatible with Wine, you could probably play both Linux and Windows games in your device.

If you can't install Linux games, there's still a chance the game itself works. To extract the game files without installing, use a tool such as unzip to extract the files from the .sh installer (such installer is just a fancy ZIP file).

For Windows games, it should be possible to install them normally by using Wine (on a terminal session, type "wine name-of-the-installer.exe" without quotation marks, then press enter to run).

Now, if it uses a stock OS, then sadly I can't help much, as I never used ChromeOS nor have I gone after any info.

GOG is a website - you can't download it.

If you want to download your games, go to your account here:
https://www.gog.com/en/account
And download the normal game installers

Most major distros i believe are compatible. And Wine Is Not and Emulator, instead it just forwards the appropriate calls to make it connect with the local API, though getting it to work seamlessly could be an issue. Google is suppose to be supporting major brands by updating the ChromeOS, and is suppose to support Android apps natively (at some point, probably). But it is a poor choice in my mind.

Another option MIGHT be emulation through a VM on a chromebook. While my experience doesn't show you can enable the VM ability, the kernel in some distros has a kernel module in which Qemu can plug into to run at nearly full speed, and you could then install Windows on it. (Tried it, but wasn't able to transfer files very easily causing me to abandon that approach). However i wouldn't expect much beyond XP, you won't get speed, and space is very limited from the built-in memory space. Though not impossible.

At this point it would be better to emulate 8 & 16 bit systems and just enjoy the old days with it at that point.

The topic starter does not own any games here...