The Red Deck is a deck which provides +1 discard every round. This deck is unlocked by default.
Starting Contents
It contains the 52 cards of a normal deck: four suits, each with 13 cards (2 to 10, Jack, Queen, King and Ace).
Synergies
Being one of the more generic decks, Red Deck pairs nicely with anything, and as such lets the player utilize lots of different strategies centralizing around what the run gives them without much issue.
An extra discard means the player can cycle through at most 5 other cards, which helps significantly for playing bigger poker hands while also helping find specific cards, acting as an extra layer of filtering.
- Thanks to the prominent feature that Red Deck possesses, Jokers that function off of discards should be of priority when using it. An example would be
Banner ({{Chips|+30}} for each remaining {{hl|orange|discard}} Common Chips Independent Banner.png), which gains +30 Chips per remaining discard.
- Discard-dependent Jokers such as
Mail-in Rebate (),
Faceless Joker (Earn {{Money|5}} if {{hl|orange|3}} or more {{hl|orange|face cards}} are discarded at the same time Common Economy On Discard Faceless_Joker.png),
Castle (This Joker gains {{Chips|+3}} per discarded [[Card Suits|{{hl|orange|[suit]}}]] card, suit changes every round <br> {{currently|{{chips|+0}}}} Uncommon Chips Mixed Castle.png),
Burnt Joker (Upgrade the level of the first {{hl|orange|discarded}} poker hand each round Sell 50 cards. Rare Effect On Discard Burnt Joker.png) or
Yorick (This Joker gains {{xmult|1}} every {{hl|orange|23}} {{hl|gray|[23]}} cards discarded<br>{{currently|{{xmult|1}}}} Find this [[Jokers|Joker]] from the [[Spectral Cards|{{hl|sblue|Soul}}]] card. Legendary Multiplicative Mult Mixed Yorick.png) are also preferred when using Red Deck.
- Even though not being directly harmful, the likes of
Delayed Gratification (Earn {{Money|2}} per {{hl|orange|discard}} if no discards are used by end of the round Common Economy N/A (Passive) Delayed_Gratification.png),
Green Joker ({{mult|+1}} per hand played <br> {{mult|-1}} per discard <br> {{Currently|{{mult|+0}}}} Common Additive Mult Mixed Green_Joker.png) or
Ramen ({{xmult|2}}, loses {{xmult|0.01}} per {{hl|orange|card}} discarded Uncommon Multiplicative Mult Mixed Ramen.png) gives less value when using discards, which hurts Red Deck's potential when paired with them.
- Although notably,
Delayed Gratification (Earn {{Money|2}} per {{hl|orange|discard}} if no discards are used by end of the round Common Economy N/A (Passive) Delayed_Gratification.png) enjoys a boost to its effect, giving the player an extra $2 in most cases. The risk of using a deck with basically no effect oftentimes outweigh the benefit that this interaction gives, but nonetheless, it can be considered a synergy.
Paint Brush ({{hl|orange|+1}} hand size Base Paint Brush.png) and
Palette ({{hl|orange|+1}} hand size Reduce your hand size down to five cards. Upgraded Palette.png) make it easier to search for specific cards or hands in your deck when combined with the extra discard.
The Serpent ( Boss The Serpent.png) benefits from the extra discard because it allows the player to draw an extra 3 cards, making the blind more manageable.
The Hook ( Boss The Hook.png) benefits from the extra discard because it allows the player to see more cards before the cards are forcefully discarded, making it significantly easier to assemble a 5 cards hand.

Purple Seal (Creates a {{Tarot|}} card when {{hl|orange|discarded}}<br>{{room}} Purple Seal.png): The extra discard provides more opportunities to generate more Tarot Cards.
Petroglyph ({{hl|orange|-1}} Ante, <br> {{hl|red|-1}} discard each round Reach Ante 12 Upgraded Petroglyph.png): Red Deck can help offset the -1 discard from Petroglyph.
- Red Deck can help offset the -1 discard penalty from playing
Blue Stake and above.
Anti-Synergies
Jokers
Burglar (When [[Blind|{{hl|orange|Blind}}]] is selected, gain {{hl|blue|+3}} Hands and {{hl|orange|lose all discards}} Uncommon Effect On Blind Select Burglar.png) nullifies red deck's +1 discard.
Blinds
The Water ( Boss The Water.png) also nullifies red deck's +1 discard.
Trivia
- Red and Blue backed playing card decks are some of the most common colors used in real-world playing card decks, such as Bicycle decks.
In other languages
| Language | Name |
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| Internal | b_red |
| Chinese (Simplified) | 红色牌组 |
| Chinese (Traditional) | 紅色牌組 |
| Dutch | Rood kaartspel |
| French | Jeu rouge |
| German | Rotes Deck |
| Indonesian | Red Deck |
| Italian | Mazzo rosso |
| Japanese | レッドデッキ |
| Korean | 레드 덱 |
| Polish | Czerwona talia |
| Portuguese (Brazilian) | Baralho Vermelho |
| Russian | Красная колода |
| Spanish (Spain) | Baraja roja |
| Spanish (Latin America) | Baraja roja |
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| Standard Decks |
Red Deck ()
Blue Deck ( {{hl|blue|+1}} hand every round Discover at least {{hl|orange|20}} items from your [[collection]] Blue Deck.png)
Yellow Deck ( Start with extra {{Money|10}} Discover at least {{hl|orange|50}} items from your [[Collection|collection]] Yellow Deck.png)
Green Deck ( At end of each Round: <br> {{Money|2}} per remaining {{hl|blue|Hand}} <br> {{Money|1}} per remaining {{hl|red|Discard}} <br> Earn no {{hl|orange|Interest}} Discover at least {{hl|orange|75}} items from your [[collection]] Green Deck.png)
Black Deck ( {{hl|orange|+1}} Joker slot <br> {{hl|blue|-1}} hand every round Discover at least {{hl|orange|100}} items from your [[collection]] Black Deck.png)
Magic Deck ( Start run with the {{V|Crystal Ball|class=hl-purple}} voucher and {{hl|orange|2}} copies of {{tarot|The Fool}} Win a run with the {{D|Red}} on [[Stakes|any difficulty]] Magic Deck.png)
Nebula Deck ( Start run with the {{V|Telescope|class=hl-cyan}} voucher <br> {{hl|red|-1}} consumable slot Win a run with the {{D|Blue}} on [[Stakes|any difficulty]] Nebula Deck.png)
Ghost Deck ( [[Spectral Cards|{{hl|sblue|Spectral}}]] cards may appear in the shop, start with a {{spectral|Hex}} card Win a run with the {{D|Yellow}} on [[Stakes|any difficulty]] Ghost Deck.png)
Abandoned Deck ( Start run with no {{F|}}[[Card Ranks#Face cards|{{hl|orange|Face Cards}}]] in your deck Win a run with the {{D|Green}} on [[Stakes|any difficulty]] Abandoned Deck.png)
Checkered Deck ( Start run with {{hl|orange|26}} {{suit|Spades}} and {{hl|orange|26}} {{suit|Hearts}} in deck Win a run with the {{D|Black}} on any difficulty Checkered Deck.png)
Zodiac Deck ( Start run with {{V|Tarot Merchant|class=hl-purple}}, {{V|Planet Merchant|class=hl-cyan}}, and {{V|Overstock|class=hl-orange}} Win a run with any [[Decks|deck]] on the {{Stake|Red}} difficulty or harder Zodiac Deck.png)
Painted Deck ( {{hl|orange|+2}} hand size, <br> {{hl|red|-1}} Joker slot Win a run with any [[Decks|deck]] on the {{Stake|Green}} difficulty or harder Painted Deck.png)
Anaglyph Deck ( After defeating each [[Blinds|{{hl|orange|Boss Blind}}]], gain a [[File:Double tag.png|24px]] [[Tags|{{hl|orange|Double Tag}}]] Win a run with any [[Decks|deck]] on the {{Stake|Black}} difficulty or harder Anaglyph Deck.png)
Plasma Deck ( Balance [[Chips|{{hl|blue|Chips}}]] and [[Mult|{{hl|red|Mult}}]] when calculating score for played hand <br> {{hl|red|X2}} base Blind size Win a run with any [[Decks|deck]] on the {{Stake|Blue}} difficulty or harder Plasma Deck.png)
Erratic Deck ( All [[Card Ranks|{{hl|orange|Ranks}}]] and [[Suits|{{hl|orange|Suits}}]] in deck are randomized Win a run with any [[Decks|deck]] on the {{Stake|Orange}} difficulty or harder Erratic Deck.png)
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| Challenge Decks |
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