I really don't know much about GOG. Is the versions offered here different than the original Might and Magic? How is that possible? Do they have access to the source code?
What are the differences between there's and the original versions?
Thanks,
Markis

The only thing GOG does is patch the games to the latest official patch (if there is one). Then they either make it work with the newer versions of Windows (XP, Vista, and 7) if it is a Windows-based game. If it's a DOS-based game, then they configure DOSBOX to make the game run as best as possible. They do NOT have access to any source code, just all the game files.

The game offered here isn't different from retail version.
Well the gameplay is the same, the MaM 1-5 games are wrapped in DOSBox, because they are DOS-based and as Judas said, all the games are patched, which is a standard for games offered on GOG.

With newer games the devs/distributors also provide them DRMless versions of the game files so if original release had DRM, GOG version has none.

However, this is not the case with the Might and Magic games; they still ask you to look up words in the "manual" when leaving/entering some cities.

Such archaid copy protections were integrated into game durring developent and can't be removed without access to source code but for some games GOG provides code sheets you can print to make it easier to get past those situations. This is not the case with MM1-6 pack?

MM3 has a crack (MM3.com) - don't know about the other ones.

it is. i still consider it DRM/copy protection, however archaic.

In this case they can. There's a single byte in the save file that decides whether you've successfully entered the code already or not. It was pretty easy to write a program to patch the save file so you don't have to enter the code. I don't know why GOG hasn't officially done this.

Because they don't have knowhow? Because they'd need permission fron devs/publishers to hack the game files? And in any case, if GOG staff wanted, had skills to and the permission to hack the games I'd image they'd aim to remove the copy protection entirely rather than making separate program to fix it in saves.

As far as I know GOG does not remove DRM from games, instead devs/publishers provide them with Gold Master versions of the games (version of game before DRM is applied). It's much easier and safer this way as cracking DRM can easily break the game even if you know game inside out (just see Warlords Battlecry 3 where DRM removal, by dev no less, broke the game and needed unofficial patch to fix). Obviously this can't be done with games with old copy protection schemes.