;) It kind of depends on your OS and the hash used. If your on windows there are many CRC32 ones *they all do pretty much the same thing*, but, I've only ever used MD5summer for MD5 generation on windows, it is free: http://www.md5summer.org/

The hash files generated by one program sometimes don't work with another. If you want to check your files you may have to do some quick "find/replace all" commands to convert it into the format the program your using wants.

What I did to check my files was use md5summer to generate md5's of my files. Used notepad++ *has regex support* to convert xyem's file to my format. Sorted both lists in notepad++, and then winmerge it to find differences. It seems a little complicated but not too hard.

Does it work only with md5?

As I said before, at the moment I am using QuickSFV (Windows). It allows me to check not only md5 but also other checksums like sfv. Unfortunately it does not allow me to auto-check subdirectories. (example: I have some subdirectories with separate checksum files and I cant select them all at once - I need to open each subdirectory and check every checksum file manually) so I'm looking maybe for a better program to have this option.

Hash files. But hashed sums inside are always the same, right?

Yes, unless there is a fault somewhere (e.g. damaged file, incorrect implementation of algorithm).

Right, so I've had a little play about today and made this site:
http://mule.electricjungle.org/xgog/
It currently lists:

The game title (as on the Game Catalogue), the file path (as it is on GOGs servers), the version and the MD5 sum.

Some of the games are missing as I don't own them yet. I will look at those games you've already noted are the wrong versions and re-download them and add the new version in. Please let me know of any mistakes, I didn't make the database structure ideally but I will repair that over the coming week while adding new features.

Any features you want to see first?

Yeah, I focused on getting the installer (and related files) done first because of the versions. Not entirely sure what to do with the versions in regards to the extras. If the zips contain a general creation time, I'll just use that (e.g. 201012192316) but if not, it'll just have to be the date I add it or something.

The extras will be added over the next week (probably tomorrow) :)

I'd actually like to develop a script that crawls out directories versus the latest version of all GOG's stuff. This would help guarantee we aren't missing anything when GOG adds new content or updates an installer. If you want help developing something like this I'd be happy to help, maybe I could do a simple Java or Python script (I know Java way better but I hate to make people install a JVM if they don't have one, guess I could bundle one).

One of the planned features on XGOG will be the ability to flag a file as "out of date" and then when I update it, it'll email everyone who signs up (and has notifications turned on) that an updated version is available.

A script that crawls through local installers and flags files out of date on XGOG if the local one is newer and informs the user of anything that there is a newer version of (according to XGOG) would be really handy. I'm sure I could come up with something quick myself but if you want to make one up, please feel free :)

I love this idea!

But but but.. are you going to download everyday every file to check its version? :D

Not possible/practical. The games I have already already total just over 200G which would take 33 hours to download it all again (and that's at full speed, my ISP would actually throttle me after about 10 hours if I start it immediately after peak time.)

Finding out about updates will be a community thing, though I might write something that downloads everything over a 3 month "cycle" to support that. I re-downloaded the games you mentioned were 'issue' games and started to update the database.

Arcanum was fine, your version number was larger than mine and when I downloaded it, I got a different file. However, when I came to update Fallout, the new download File Version was still 1.1.1.4 and has the same digest (unlike your 1.1.1.22).

I've left my server getting the digests for all the extras and will upload them into the database tomorrow.

Yes I just re-downloaded and latest version and it is 1.1.1.4... Maybe that 1.1.1.22 was suppose to be 1.1.1.2, but their hand stuttered when building the exe :)

Could be :)

I've added all the extras I have now too.

Thank you :) Everything looks good.

I just recently got "Myst: Masterpiece Edition". Latest downloadable version is 1.0.0.20, site only has 1.0.0.13, so you might need to re-download.

It is one of the win7 combitable x-mas surprise games :).

Sorry for necro'ing this, but can someone help me post the md5 checksums for the 5 .bin files and 1 .exe file of The Witcher 1 (GOG version)? Thanks in advance.