Civ VI Platinum Giveaway Possible?

you can just give it away as a normal civ game and write in the description that its the platinum edition.

You can give it away as the regular Civilization 6, when the winner activates your Platinum he can still mark it as received and it will be alright. You will also get the same amount of CV since Civ 6 already caps out at 50P (the maximum possible) and is marked as a bundled game.

Thanks, folks! Those comments were super helpful. (I didn’t know that there was a hard cap to points per game.)

Like ThankYouForTheGift and Filipi already said you can make a giveaway for the base game. I also want to add that If there is a questions about something with humble choice it's most of the time already answered in the corresponding discussion https://www.steamgifts.com/go/comment/lW97vpe.

You can create ticket in support section, first category "Add game to list".