diff --git a/package.json b/package.json
index da9fefb4..9f390a98 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
     "build-ts": "tsc && npm pack",
     "test0": "mocha -r ts-node/register test/games/rincala.test.ts",
     "test": "mocha -r ts-node/register test/**/*.test.ts",
+    "testc": "mocha -r ts-node/register test/common/*.test.ts",
     "lint": "npx eslint .",
     "dist-dev": "rimraf dist && webpack",
     "dist-prod": "rimraf dist && webpack --mode=production",
diff --git a/src/common/decktet/Card.ts b/src/common/decktet/Card.ts
index 1066d1a4..f233e679 100644
--- a/src/common/decktet/Card.ts
+++ b/src/common/decktet/Card.ts
@@ -8,6 +8,7 @@ type Params = {
     personality?: boolean;
     event?: boolean;
     location?: boolean;
+    deck?: number;
 };
 
 export const cardSortAsc = (a: Card, b: Card): number => {
@@ -51,6 +52,7 @@ export class Card {
     private readonly _personality: boolean = false;
     private readonly _event: boolean = false;
     private readonly _location: boolean = false;
+    private readonly _deck: number = 0;
     private _plain: string|undefined;
 
     constructor(params: Params) {
@@ -66,6 +68,9 @@ export class Card {
         if (params.location !== undefined) {
             this._location = params.location;
         }
+        if (params.deck !== undefined) {
+            this._deck = params.deck;
+        }
     }
 
     public get name(): string {
@@ -86,9 +91,12 @@ export class Card {
     public get location(): boolean {
         return this._location;
     }
+    public get deck(): number {
+        return this._deck;
+    }
 
     public get uid(): string {
-        return [this.rank.uid, ...this.suits.map(s => s.uid)].join("");
+        return [this.rank.uid, ...this.suits.map(s => s.uid), (this._deck > 0 ? this._deck : "")].join("");
     }
 
     public setPlain(plain: string|undefined): Card {
@@ -145,7 +153,8 @@ export class Card {
                 nudge: {
                     dx: 250,
                     dy: -250,
-                }
+                },
+                orientation: "vertical",
             });
         }
         const nudges: [number,number][] = [[-250, -250], [-250, 250], [250, 250]];
@@ -158,31 +167,49 @@ export class Card {
                 nudge: {
                     dx: nudge[0],
                     dy: nudge[1],
-                }
+                },
+                orientation: "vertical",
             });
         }
         return glyph;
     }
 
     public clone(): Card {
-        return new Card({name: this.name, rank: this.rank, suits: [...this.suits.map(s => s.clone())], personality: this.personality, location: this.location, event: this.event});
+        return new Card({name: this.name, rank: this.rank, suits: [...this.suits.map(s => s.clone())], personality: this.personality, location: this.location, event: this.event, deck: this.deck});
+    }
+
+    public cloneForDeck(deck: number): Card {
+        return new Card({name: this.name, rank: this.rank, suits: [...this.suits.map(s => s.clone())], personality: this.personality, location: this.location, event: this.event, deck: deck});
     }
 
     public static deserialize(card: Card|string, allowCustom = false): Card|undefined {
+        let strDeck: number = 0;
         if (typeof card === "string") {
-            const found = [...cardsBasic, ...cardsExtended].find(c => c.uid === card.toUpperCase());
+            let found: Card|undefined;
+            if (card.length > 1 && card.charAt(card.length - 1).match(/\d/)) {
+                strDeck = parseInt(card.charAt(card.length - 1),10);
+                found = [...cardsBasic, ...cardsExtended].find(c => c.uid === card.toUpperCase().substring(0,card.length - 1));
+                if (found)
+                    return new Card({name: found._name, rank: Component.deserialize(found._rank)!, suits: [...found._suits.map(s => Component.deserialize(s)!)], personality: found._personality, location: found._location, event: found.event, deck: strDeck});
+            } else {
+                found = [...cardsBasic, ...cardsExtended].find(c => c.uid === card.toUpperCase());
+            }
             if (allowCustom && found === undefined) {
-                const [strRank, ...strSuits] = card.split("");
+                let [strRank, ...strSuits] = card.split("");
+                if (card.length > 1 && card.charAt(card.length - 1).match(/\d/)) {
+                    strDeck = parseInt(card.charAt(card.length - 1),10);
+                    [strRank, ...strSuits] = card.substring(0,card.length - 1).split("");
+                }
                 const rank = Component.deserialize(strRank);
                 const suits = strSuits.map(s => Component.deserialize(s));
                 if (rank === undefined || suits.includes(undefined)) {
                     return undefined;
                 }
-                return new Card({name: "_custom", rank, suits: (suits as Component[]).sort((a,b) => a.seq - b.seq)});
+                return new Card({name: "_custom", rank, suits: (suits as Component[]).sort((a,b) => a.seq - b.seq), deck: strDeck});
             }
             return found;
         }
-        return new Card({name: card._name, rank: Component.deserialize(card._rank)!, suits: [...card._suits.map(s => Component.deserialize(s)!)], personality: card._personality, location: card._location, event: card._event});
+        return new Card({name: card._name, rank: Component.deserialize(card._rank)!, suits: [...card._suits.map(s => Component.deserialize(s)!)], personality: card._personality, location: card._location, event: card._event, deck: strDeck});
     }
 }
 
diff --git a/src/common/decktet/Deck.ts b/src/common/decktet/Deck.ts
index 081ec8cd..6161f934 100644
--- a/src/common/decktet/Deck.ts
+++ b/src/common/decktet/Deck.ts
@@ -3,9 +3,23 @@ import { Card, cardsBasic, cardsExtended } from "./Card";
 
 export class Deck {
     private _cards: Card[];
+    private _decks: number | undefined;
 
-    constructor(cards: Card[]) {
-        this._cards = cards.map(c => new Card(c));
+    constructor(cards: Card[], decks?: number) {
+        if (decks === undefined) {
+            this._cards = cards.map(c => new Card(c));
+        } else if (decks < 1 || decks > 9) {
+            throw new Error("Only one to nine decktet decks are supported.");
+        } else {
+            const newCards: Card[] = [];
+            for (let d=1; d <= decks; d++) {
+                cards.forEach(c => {
+                    newCards.push(c.cloneForDeck(d));
+                });
+            }
+            this._cards = newCards.map(c => new Card(c));
+            this._decks = decks;
+        }
     }
 
     public get cards(): Card[] {
@@ -31,6 +45,20 @@ export class Deck {
         return this;
     }
 
+    public addAll(uid: string): Deck {
+        if (this._decks === undefined) {
+            throw new Error("Use add() to add cards to a single deck.");
+        }
+        let card = uid;
+        if (card.length > 1 && card.charAt(card.length - 1).match(/\d/)) {
+            card = card.substring(0,card.length - 2);
+        }
+        for (let d=1; d <= this._decks; d++) {
+            this.add(card + d);
+        }
+        return this;
+    }
+
     public remove(uid: string): Deck {
         const idx = this._cards.findIndex(c => c.uid === uid);
         if (idx < 0) {
@@ -40,6 +68,20 @@ export class Deck {
         return this;
     }
 
+    public removeAll(uid: string): Deck {
+        if (this._decks === undefined) {
+            throw new Error("Use remove() to remove cards from a single deck.");
+        }
+        let card = uid;
+        if (card.length > 1 && card.charAt(card.length - 1).match(/\d/)) {
+            card = card.substring(0,card.length - 2);
+        }
+        for (let d=1; d <= this._decks; d++) {
+            this.remove(card + d);
+        }
+        return this;
+    }
+
     public draw(count = 1): Card[] {
         const drawn: Card[] = [];
         const limit = Math.min(count, this._cards.length);
@@ -61,4 +103,4 @@ export class Deck {
     public static deserialize(deck: Deck): Deck {
         return new Deck(deck.cards);
     }
-}
\ No newline at end of file
+}
diff --git a/test/common/decktet.test.ts b/test/common/decktet.test.ts
new file mode 100644
index 00000000..7aeb7d0b
--- /dev/null
+++ b/test/common/decktet.test.ts
@@ -0,0 +1,48 @@
+/* eslint-disable @typescript-eslint/no-unused-expressions */
+
+import "mocha";
+import { expect } from "chai";
+//import { Card, Deck, cardSortAsc, cardSortDesc, cardsBasic, cardsExtended } from "../../src/common/decktet";
+import { Deck, cardsBasic, cardsExtended } from "../../src/common/decktet";
+
+describe("Decktets", () => {
+    it ("Still makes a single decktet", () => {
+        const mydeck = new Deck([...cardsBasic, ...cardsExtended]);
+        expect(mydeck.size).eq(45);
+        const card = mydeck.draw(1).map(c => c.uid)[0];
+        expect(card).eq("1M");
+        expect(mydeck.size).eq(44);
+
+        mydeck.shuffle();
+        expect(mydeck.size).eq(44);
+        expect(mydeck.remove("1K")).to.have.deep.property("size", 43);
+    });
+    
+    it ("Now makes a double decktet", () => {
+        const mydeck = new Deck([...cardsBasic, ...cardsExtended],2);
+        expect(mydeck.size).eq(90);
+        expect(mydeck.draw(1).map(c => c.uid)[0]).eq("1M1");
+        expect(mydeck.size).eq(89);
+        expect(mydeck.draw(1).map(c => c.plain)[0]).eq("Ace Suns");
+        expect(mydeck.size).eq(88);
+        
+        mydeck.shuffle();
+        expect(mydeck.size).eq(88);
+        expect(mydeck.remove("1K1")).to.have.deep.property("size", 87);
+        expect(mydeck.remove("1K2")).to.have.deep.property("size", 86);
+        expect(mydeck.removeAll("1Y")).to.have.deep.property("size", 84);
+
+    });
+    
+    it ("Doesn't blow up when the deck is out", () => {
+        const mydeck = new Deck([...cardsBasic, ...cardsExtended],3);
+        expect(mydeck.size).eq(135);
+        mydeck.draw(134);
+        expect(mydeck.size).eq(1);
+        expect(mydeck.draw(1).map(c => c.plain)[0]).eq("Court Suns Waves Wyrms");
+        expect(mydeck.size).eq(0);
+        const [card] = mydeck.draw(1);
+        expect(card).eq(undefined);
+        
+    });
+});