Card Pop!: Difference between revisions

A player cannot Card Pop! with the same partner again until that player's ID is overwritten in their Card Pop! history. Only 16 players can be stored in the history at a time, so after both players have performed Card Pop! with 16 other players, they can perform Card Pop! with each other again. If the save file is deleted, all Card Pop! data is deleted and the player's ID number is reset, so the Card Pop! history of previous save files on the same cartridge has no impact on which players the new save file can perform Card Pop! with.

Card Pop! partners are identified by their player name and a secret ID number. The secret ID number ranges from 0 to 65535, and is created at random when a new save file is created. This system is similar to the [[Trainer ID number|Trainer ID]] system in the [[core series]] games, although the ID number is not visible to the player. This means that even if two different players have the same in-game name, they will likely have distinct ID numbers and not be recognized as the same player by Card Pop!.

In Pokémon Trading Card Game, if one player is allowed to Card Pop! but the other is not (i.e. the players have performed Card Pop! together before, and one player has overwritten the other from their history, but the other has not), then if they try to Card Pop!, the first player will actually receive a card, whereas the other will get Card Pop! denied. This happens due to a small programming bug when checking the name on each player's list of current partners. This oversight was fixed on Pokémon Trading Card Game 2: The Invasion of Team GR!.

When a player performs Card Pop! with another, first the rarity of the rewarded card is determined separately. Assuming two random IDs, the probability of each category is given in the table below.

Once the rarity of the card is determined, the player receives a card of the selected rarity. For Common, Uncommon, and Rare, the card is selected from the list of all cards in the game of that rarity, except {{tt|Energy|Basic Energy for Pokémon Trading Card Game 2: The Invasion of Team GR!}} and {{OBP|Promotional Card|TCG GB1|Promotional}} cards. For Phantom Cards, the player receives one of the two Phantom Cards. Each player's game determines which rarity and specific card they receive separately, so they will usually receive different cards, and even of different rarity.

* In practice, the Card Pop! outcome is one out of 32768 possible results at random, but not all cards have the same chances of being selected. In Pokémon Trading Card Game, although the Phantom Card {{TCG ID|Promotional Card|Mew|PXX}} is only obtainable via Card Pop! with a 1/256 chance, it is not the rarest card to obtain by this method. In fact, {{TCG ID|Base Set|Super Energy Removal|79}} is the least frequent of all possible Card Pop! cards, with a 3/34768  chance. The most probable card to receive through Card Pop! is {{TCG ID|Fossil|Arbok|31}}, with a 315/32768 chance. Of course the rarity category probabilities do play an effect, but these differences also have to do with how the pseudo-random number generator works and how it affects the card shuffling mechanism. <!-- this is only verified on the American version via a simulation. Although the card lists and Card Pop random generation are exactly the same for all versions. Only the infrared communication is different.--> In Pokémon Trading Card Game 2: The Invasion of Team GR!, as there is near twice as many cards, many of the elegible cards are virtually unobtainable via Card Pop!.