Is this 6-pack just the base games without the expansions or add-ons? Or did these games even have expansions to begin with and were sold complete, one and done back then? Just curious before I purchase. Thanks!

Link here: https://www.gog.com/index.php/game/might_and_magic_6_limited_edition

These games have no expansions so the pack contain everything MM1-6 games have to offer (including full speech versions of Might and Magic IV & V). You should see "Limited Edition" as "Deluxe Edition". You are safe to buy it :)

Thanks man! Appreciate it.

The reason Ubi decided to call it that is probably because M&M VI was once sold as a "limited edition" boxed set that included all previous games. (Although it didn't seem to have included Swords of Xeen, which was present in the M&M VI Special Edition)