The adult meal’s prize is a two-card pack. One is a game card, the other a random character. Mine was Zoey.
Character card has a holographic image, back has logos for MCD, Netflix and K-Pop Demon Hunters.
Game card also has a holographic front, QR code and game code on the back.

There are 14 cards total. 6 in the McNugget meal and 8 in the breakfast meal. This does not include the game card (which would be a 15th card).

Are these cards given as sealed singles or in packs
I will have to check them out next time I go to town.
And see if they are avaible here.

I was in a McDonald's today - just there to get a drink. I saw a display that made it look like there were just three different cards. I might get one of those meals just to have a sample of the set but I don't want to eat too many McNuggets.