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(A)=all games are independent of each other,
(B)=players share the same instance of the game.
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A all games are independent of each other if that is possible because what if 3 or 4 people are playing at the same time?  I am not sure how it would work or if it is even possible. Because what if 2 people are playing at the same time, one person wins so his card number would be different than the other persons who hasn't won. Is it possible to have that going on at the same time?
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Both (A) and (B) are possible. (B) is technically more complex than (A) because in (B), all players' cards must be syncronized when they play at the same time. ( but it's still possible anyway. )

Last time, I forgot to mention about the number of the prizes that the contest owner must stock up for (A) and (B). So here you go.
Suppose there are 100 card turns in this game.

In (A), each player has an independent game instance, so each player could possibly win up to 100 prizes. If 3 players play the game, they may totally win up to 300 prizes at the maxumum case. The more players play the game, the more prizes the contest owner should deliver.

In (B), all players share the same game instance. They are competing to each other to win some of the 100 prizes. The maximun number of prizes that the contest owner need to stock up on is exactly 100 because it will never go over 100.

As you see, when it comes to the preparation of the prizes, (B) is definitly easier than (A).

So, I will ask you one more time. Which would you like, (A) or (B)?
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Each time a new play starts the cards are shuffled so if someone is playing again and again, the prizes are behind different cards so that person can't sit there and win all the prizes by playing over and over. When the prizes are won the cards decrease to match how many prizes are left. So each new game that starts would shuffle the prizes between the remaining cards, is that possible?
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OK.

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