Two Giveaways, One Winner?

It's unlikely. But if it happens, you simply request a reroll for one of the giveaways.

I don't like this practice either, I just throw all the copies in a single GA

It's hard to create multi copy giveaways on mobile someone told me iirc, although I don't really understand it.

Also, an issue would be if you make a five copy giveaway, and 5 of fewer people enter. Then if one person already won the game elsewhere or rejects the gift, then it takes forever to sort out since only cg can fix it. In the meanwhile the giveaway creator sits with a "not received" from the winner who needs to be rerolled (or unmarked, but either way it annoys someone since the winner will have the win notification). So from that standpoint it's better to deal with each copy individually, and then deal with rerolls if needed.

Anyway, the question: If you've created multiple giveaways for individual copies of a title, have you ever had the same person win more than one copy?

I'm sure it happens. Didn't a certain dev spam thousands of copies of their game across multiple concurrent giveaways, and then refuse to reroll?

No, I've never had a person win more than once....
You can avert this, by running the giveaways -- all containing the same game -- at different times. That way, you get a different winner each time.

I do it because I don't usually plan what games I give away, I just add random keys I have. If I decide to add a second ga to a thread, it may well be the same as the last one. When I do plan out my ga's I sometimes have different ga of the same game with different restrictions such as level and whitelist.

For an old cakeday train I had one bad rats for all and one for my whitelist, among other gibs. One unlucky guy win bad rats twice.

I won two diff copies of a game, from the same person, in separate GA's separated by only a minute or so.
Talked to the GA Creator and asked for a reroll on one.

Personally I prefer when they give away several copies in one GA, that said, it's their choice. I'm getting something free, so it doesn't bother me too much when they do it in several GA's..

You formatted the text with HTML in mind (like on Steam), but this site uses a different language.
I never made separate giveaways for multiple copies of a game, and I'd never do it, it'd just be an hassle.
I don't get how a certain user (who likes Hidden Object Games) keeps doing it, but whatever, that's his choice.

Once i saw a guy won 4 same games from same creator in almost same time.
He post the screenshoot in a thread a month ago.
He need to ask for re-roll 3 of them :v

2 girls, 1 cup?

I once created a puzzle with 5 different 3-copy giveaways. They all got about 15 entries, but there was one guy who won in every single one of them!

Didn't even leave a thank-you (-_-)