diff --git a/src/ts/controller/newGameController.ts b/src/ts/controller/newGameController.ts
index 0aabba7f..a5d1cee6 100644
--- a/src/ts/controller/newGameController.ts
+++ b/src/ts/controller/newGameController.ts
@@ -28,17 +28,18 @@ export const newGameController = {
      * Start new game event
      * @param {string} bookNumber The book number
      */
-    startNewGame( bookNumber: number) {
+    startNewGame( bookNumber: number, bookSeries?: string) {
 
         state.reset(true);
         routing.redirect( "setup" , {
-            bookNumber
+            bookNumber,
+            bookSeries
         });
 
     },
 
-    selectedBookChanged(newBookNumber: number) {
-        const book = new Book(newBookNumber);
+    selectedBookChanged(newBookNumber: number, bookSeries?: string) {
+        const book = new Book(newBookNumber, bookSeries ?? "lw");
         newGameView.setCoverImage( book.getCoverURL() );
     },
 
diff --git a/src/ts/controller/setupController.ts b/src/ts/controller/setupController.ts
index cffafbdb..a4e14234 100644
--- a/src/ts/controller/setupController.ts
+++ b/src/ts/controller/setupController.ts
@@ -27,8 +27,9 @@ export const setupController = {
         } else {
             // New game. Get hash URL parameters
             const bookNumber = Number(routing.getHashParameter("bookNumber"));
+            const bookSeries = routing.getHashParameter("bookSeries");
             const keepActionChart = routing.getHashParameter("keepActionChart") === "true";
-            state.setup(bookNumber, keepActionChart);
+            state.setup(bookNumber, keepActionChart, bookSeries);
         }
         template.translateMainMenu();
 
diff --git a/src/ts/model/book.ts b/src/ts/model/book.ts
index 5dd08996..4ae942fe 100644
--- a/src/ts/model/book.ts
+++ b/src/ts/model/book.ts
@@ -61,9 +61,7 @@ export class Book {
     /** The book XML document */
     public bookXml: XMLDocument|null;
 
-    /**
-     * Array of 100 positions with the random table numbers as they appear on the book
-     */
+    /** Array of 100 positions with the random table numbers as they appear on the book */
     public bookRandomTable: number[];
 
     /** The book title cache, plain text */
@@ -75,14 +73,18 @@ export class Book {
     /** The book disciplines cache */
     private disciplines: DisciplinesTable|null = null;
 
+    /** The book series (lw, gs) */
+    public bookSeries: string = "lw";
+
     /**
      * Constructor
      * @param number The book index number to create (1 = first)
      */
-    public constructor(num: number) {
+    public constructor(num: number, bookSeries?: string) {
         this.bookNumber = num;
         this.bookXml = null;
         this.bookRandomTable = [];
+        this.bookSeries = bookSeries ?? "lw";
     }
 
     /**
@@ -224,7 +226,7 @@ export class Book {
      * @returns The book code name. null if it was not found
      */
     public getProjectAonBookCode(): string|null {
-        const bookMetadata = projectAon.supportedBooks[ this.bookNumber - 1 ];
+        const bookMetadata = this.bookSeries === "gs" ? projectAon.supportedBooks.filter((b) => b.series === "gs")[ this.bookNumber - 1 ] : projectAon.supportedBooks[ this.bookNumber - 1 ];
         if ( !bookMetadata ) {
             return null;
         }
@@ -241,7 +243,7 @@ export class Book {
      * Returns the book XML source URL
      */
     public getBookXmlURL() {
-        return Book.getBaseUrl() + this.bookNumber.toFixed() + "/" + this.getProjectAonBookCode() +
+        return Book.getBaseUrl() + (this.bookSeries === "gs" ? "gs/" : "") + this.bookNumber.toFixed() + "/" + this.getProjectAonBookCode() +
             ".xml";
     }
 
@@ -423,7 +425,7 @@ export class Book {
         if (this.bookNumber === 29) {
             return null;
         }
-        return Book.getBaseUrl() + this.bookNumber.toFixed() + "/cover.jpg";
+        return Book.getBaseUrl() + (this.bookSeries !== "lw" ? this.bookSeries + "/" : "") + this.bookNumber.toFixed() + "/cover.jpg";
     }
 
     /**
diff --git a/src/ts/model/mechanics.ts b/src/ts/model/mechanics.ts
index 6c0dcec4..366d3143 100644
--- a/src/ts/model/mechanics.ts
+++ b/src/ts/model/mechanics.ts
@@ -61,7 +61,7 @@ export class Mechanics {
      * Returns the book XML URL
      */
     public getXmlURL(): string {
-        return `data/mechanics-${this.book.bookNumber}.xml`;
+        return `data/mechanics${!this.book.bookSeries || this.book.bookSeries === "lw" ?  "" : "-gs"}-${this.book.bookNumber}.xml`;
     }
 
     /** Set mechanics XML */
diff --git a/src/ts/model/projectAon.ts b/src/ts/model/projectAon.ts
index 3e886dc2..aadd0ef7 100644
--- a/src/ts/model/projectAon.ts
+++ b/src/ts/model/projectAon.ts
@@ -17,6 +17,12 @@ export interface BookMetadata {
 
     /** Whether a cover exists for the book */
     hasCover: boolean; 
+
+    /** Book Series (lw, gs) */
+    series: string;
+
+    /** Book Number in the series */
+    bookNumber: number;
 }
 
 /**
@@ -266,14 +272,25 @@ export const projectAon = {
             hasCover: false,
         },
 
+        /////////// WORLD OF LONE WOLF ///////////
+        // Book 1:
+        {
+            bookNumber: 1,
+            title: "Grey Star the Wizard",
+            code: "01gstw",
+            illustrators: ["bonner"],
+            biographies: ["ipbiogs", "jdbiogs", "pbbiogs"],
+            series: "gs",
+        },
+
         ] as BookMetadata[],
 
     /**
      * Returns the title of a book
      * @param bookNumber Book number, 1-index based
      */
-    getBookTitle( bookNumber: number ): string {
-        return projectAon.supportedBooks[bookNumber - 1][ "title" ];
+    getBookTitle( bookNumber: number, bookSeries?: string ): string {
+        return projectAon.supportedBooks.filter((b) => (b.series === bookSeries))[bookNumber - 1][ "title" ];
     },
 
     /**
diff --git a/src/ts/model/section.ts b/src/ts/model/section.ts
index 7fb200ac..58abe52c 100644
--- a/src/ts/model/section.ts
+++ b/src/ts/model/section.ts
@@ -126,7 +126,9 @@ export class Section {
 
         const sNumber = this.getSectionNumber();
         if ( sNumber ) {
-            if ( sNumber === 1 ) {
+            if (this.book.bookSeries === "gs" && sNumber === 1) {
+                return "sage";
+            } else if ( sNumber === 1) {
                 return "kaiwisdm";
             } else {
                 return `sect${( sNumber - 1 )}`;
diff --git a/src/ts/scripts/bookData.ts b/src/ts/scripts/bookData.ts
index 3583585b..b0d04b95 100644
--- a/src/ts/scripts/bookData.ts
+++ b/src/ts/scripts/bookData.ts
@@ -27,23 +27,27 @@ export class BookData {
     /** Array with illustrations authors directories names */
     private illAuthors: string[];
 
+    /** Book Series (lw, gs) */
+    private bookSeries: string = "lw";
+
     /**
      * Constructor
      * @param bookNumber The book number (1-based index)
      */
     constructor(bookNumber: number) {
-        this.bookNumber = bookNumber;
+        this.bookNumber = projectAon.supportedBooks[ bookNumber - 1 ].bookNumber ?? bookNumber;
         this.bookMetadata = projectAon.supportedBooks[ bookNumber - 1 ];
         this.code = this.bookMetadata.code;
         this.illAuthors = this.bookMetadata.illustrators;
         this.hasCover = this.bookMetadata.hasCover === undefined ? true : this.bookMetadata.hasCover;
+        this.bookSeries = this.bookMetadata.series ?? "lw";
     }
 
     /**
      * Get the local relative path for the book data
      */
     private getBookDir(): string {
-        return BookData.TARGET_ROOT + "/" + this.bookNumber.toFixed();
+        return BookData.TARGET_ROOT + "/" + (this.bookSeries !== "lw" ? this.bookSeries + "/" : "") + this.bookNumber.toFixed();
     }
 
     /**
@@ -86,7 +90,7 @@ export class BookData {
      * Get the svn absolute URL for illustrations directory of a given author
      */
     private getSvnIllustrationsDir(author: string): string {
-        return "project-aon/en/png/lw/" + this.code + "/ill/" +
+        return `project-aon/en/png/${this.bookSeries}/` + this.code + "/ill/" +
             author;
     }
 
@@ -139,7 +143,7 @@ export class BookData {
      */
     private downloadCover() {
         if ( this.hasCover ) {
-            const coverPath = "project-aon/en/jpeg/lw/" + this.code +
+            const coverPath = `project-aon/en/jpeg/${this.bookSeries}/` + this.code +
                 "/skins/ebook/cover.jpg";
             const targetPath = this.getBookDir() + "/cover.jpg";
             fs.copyFileSync(coverPath, targetPath);
@@ -147,11 +151,11 @@ export class BookData {
     }
 
     public downloadBookData() {
-        const bookDir = BookData.TARGET_ROOT + "/" + this.bookNumber.toFixed();
+        const bookDir = this.getBookDir();
 
         console.log("Re-creating directory " + bookDir);
         fs.removeSync( bookDir );
-        fs.mkdirSync( bookDir );
+        fs.mkdirSync( bookDir, {recursive: true} );
 
         this.downloadCover();
 
diff --git a/src/ts/state.ts b/src/ts/state.ts
index 0184609e..54f52838 100644
--- a/src/ts/state.ts
+++ b/src/ts/state.ts
@@ -104,14 +104,14 @@ export class State {
     /**
      * Setup the state for a book number
      */
-    public setup(bookNumber: number, keepActionChart: boolean) {
+    public setup(bookNumber: number, keepActionChart: boolean, bookSeries?: string) {
 
         if (!bookNumber) {
             bookNumber = 1;
         }
 
         this.sectionStates = new BookSectionStates();
-        this.book = new Book(bookNumber);
+        this.book = new Book(bookNumber, bookSeries);
 
         // Action chart
         this.actionChart = null;
diff --git a/src/ts/views/newGameView.ts b/src/ts/views/newGameView.ts
index 1c178064..9249573e 100644
--- a/src/ts/views/newGameView.ts
+++ b/src/ts/views/newGameView.ts
@@ -12,13 +12,15 @@ export const newGameView = {
         let html = "";
         let series: BookSeriesId|null = null;
         for ( let i = 1; i <= projectAon.supportedBooks.length; i++) {
-            let seriesId = new Book(i).getBookSeries().id;
+            let bookNumber = projectAon.supportedBooks[i-1].bookNumber ?? i;
+            let bookSeries = projectAon.supportedBooks[i-1].series;
+            let seriesId = new Book(bookNumber, bookSeries).getBookSeries().id;
             if (seriesId !== series) {
                 html += `<optgroup label="${translations.text(BookSeriesId[seriesId])}"></optgroup>`;
                 series = seriesId;
             }
-            const title = projectAon.getBookTitle( i )
-            html += '<option value="' + i.toFixed() + '" >' + i.toFixed() + ". " + title + "</option>";
+            const title = projectAon.getBookTitle( bookNumber, bookSeries );
+            html += "<option value='" + JSON.stringify({"bookNumber": bookNumber.toFixed(), "bookSeries": bookSeries}) + "' >" + bookNumber.toFixed() + ". " + title + "</option>";
         }
         $("#newgame-book").html(html);
 
@@ -29,12 +31,15 @@ export const newGameView = {
                 alert(translations.text("youMustAgree"));
                 return;
             }
-            newGameController.startNewGame(parseInt(<string>$("#newgame-book").val()));
+
+            let selectedBook = JSON.parse(<string>$("#newgame-book").val());
+            newGameController.startNewGame(parseInt(selectedBook.bookNumber), selectedBook.bookSeries);
         });
 
         // Book change
         $("#newgame-book").on("change", () => {
-            newGameController.selectedBookChanged(parseInt(<string>$("#newgame-book").val()));
+            let selectedBook = JSON.parse(<string>$("#newgame-book").val());
+            newGameController.selectedBookChanged(parseInt(selectedBook.bookNumber), selectedBook.bookSeries);
         });
         
         // Random table change
diff --git a/www/data/mechanics-gs-1.xml b/www/data/mechanics-gs-1.xml
new file mode 100644
index 00000000..efd2e747
--- /dev/null
+++ b/www/data/mechanics-gs-1.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<mechanics book="1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/cracrayol/kaichronicles/master/www/data/mechanics.xsd">
+
+    <!-- GAME RULES -->
+    <sections>
+
+
+    </sections>
+
+</mechanics>
\ No newline at end of file