The Collection is a menu in Balatro that contains a list of all items that the player will encounter in gameplay, varying from boss blinds to booster packs. It can either be accessed from the Main Menu or from the Options menu during a run.
Below are links to the various pages concerning each category of collectibles.
Obtaining a collectible card, whether it be via buying it from the shop, obtaining it from a purple or blue seal, or having it created, discovers it. Some collectible cards have prerequisites before being able to be found in the shop and thus those prerequisites need to be fulfilled before they can be discovered. Decks are discovered either by discovering a certain amount of the collection or by beating a run on a certain deck or stake. Vouchers are discovered by buying them in the shop. As with the cards, some vouchers have prerequisites that need to be fulfilled before they appear in the shop, but unlike the cards, the former of the voucher pairs is needed in order to find the latter of the pairs. Editions are discovered by having a playing card or joker with them on it. Tags are discovered by acquiring them, typically by skipping a Blind with them as the reward, though the Double Tag can also be found through the Anaglyph Deck or Diet Cola. Boss blinds are discovered by beating the boss. Since some only spawn at certain antes or above, some can be harder than others to discover.
Collectibles are not discovered when using the Challenge Decks and will not count towards progress, though it will look like it has in some cases. Discovering every item in the collection rewards the Completionist achievement.
It is possible for players to instantly unlock all 340 items in the collection, but at the cost of having achievements disabled for the selected profile. To unlock all of the items in the game, the player must click on the "Profile" button near the bottom left corner of the main menu, then click on the gray "Unlock All" button. Clicking on it once will warn the player about achievements being disabled, but clicking once more will make the player unlock everything in the collection.
Some of the prerequisites for unlocking cards may be difficult to get and/or counterproductive to a given run, such as Glow Up ({{hl|edition|Foil}}, {{hl|edition|Holographic}}, and {{hl|edition|Polychrome}} cards appear {{hl|orange|4X}} more often Have at least 5 Joker cards with Foil, Holographic, or Polychrome (or Negative) effect Upgraded Glow Up.png)'s requirement to have at least 5 Joker cards with editions. A tactic for unlocking them as well as discovering unused cards is to get them once a successful run has been won, when the player may not mind worsening their build and losing. The player can then use their leftover money and remaining rounds to target specific unlock requirements and buy undiscovered cards.
It should be noted that in a new profile, before playing any round, the following items are automatically discovered:
Joker ({{Mult|+4}} Common Additive Mult Independent Joker.png);
Red Deck ( {{hl|red|+1}} discard every round Unlocked from start Red Deck.png);
The following sections will list all 352 items in the Collection, sorted by their respective category. It should be noted that the game does not numerically count the 8 Enhanced cards and the 4 seals, which is why the Collection lists having a total of 340 items and having only 2 items discovered in a new profile (the Joker and the Red Deck).