diff --git a/src/constants.ts b/src/constants.ts
index a2f7e47b996..0b1261ad814 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -1 +1,5 @@
-export const PLAYER_PARTY_MAX_SIZE = 6;
+/** The maximum size of the player's party */
+export const PLAYER_PARTY_MAX_SIZE: number = 6;
+
+/** Whether to use seasonal splash messages in general */
+export const USE_SEASONAL_SPLASH_MESSAGES: boolean = false;
diff --git a/src/data/splash-messages.ts b/src/data/splash-messages.ts
index 8e95bba0591..b8069f77737 100644
--- a/src/data/splash-messages.ts
+++ b/src/data/splash-messages.ts
@@ -1,46 +1,136 @@
-import i18next from "i18next";
+import { USE_SEASONAL_SPLASH_MESSAGES } from "#app/constants";
 
-export function getBattleCountSplashMessage(): string {
-  return `{COUNT} ${i18next.t("splashMessages:battlesWon")}`;
+//#region Interfaces/Types
+
+type Month = "01" | "02" | "03" | "04" | "05" | "06" | "07" | "08" | "09" | "10" | "11" | "12";
+type Day =
+  | Month
+  | "13"
+  | "14"
+  | "15"
+  | "16"
+  | "17"
+  | "18"
+  | "19"
+  | "20"
+  | "21"
+  | "22"
+  | "23"
+  | "24"
+  | "25"
+  | "26"
+  | "27"
+  | "28"
+  | "29"
+  | "30"
+  | "31";
+
+/**
+ * Represents a season with its {@linkcode name},
+ * {@linkcode start} day+month, {@linkcode end} day+month
+ * and {@linkcode messages}.
+ */
+interface Season {
+  /** The name of the season (internal use only) */
+  name: string;
+  /** The start day and month of the season. Format `MM-DD` */
+  start: `${Month}-${Day}`;
+  /** The end day and month of the season. Format `MM-DD` */
+  end: `${Month}-${Day}`;
+  /** Collection of the messages to display (without the `i18next.t()` call!) */
+  messages: string[];
 }
 
+//#region Constants
+
+/** The weight multiplier for the battles-won splash message */
+const BATTLES_WON_WEIGHT_MULTIPLIER = 10;
+/** The weight multiplier for the seasonal splash messages */
+const SEASONAL_WEIGHT_MULTIPLIER = 10;
+
+//#region Common Messages
+
+const commonSplashMessages = [
+  ...Array(BATTLES_WON_WEIGHT_MULTIPLIER).fill("battlesWon"),
+  "joinTheDiscord",
+  "infiniteLevels",
+  "everythingStacks",
+  "optionalSaveScumming",
+  "biomes",
+  "openSource",
+  "playWithSpeed",
+  "liveBugTesting",
+  "heavyInfluence",
+  "pokemonRiskAndPokemonRain",
+  "nowWithMoreSalt",
+  "infiniteFusionAtHome",
+  "brokenEggMoves",
+  "magnificent",
+  "mubstitute",
+  "thatsCrazy",
+  "oranceJuice",
+  "questionableBalancing",
+  "coolShaders",
+  "aiFree",
+  "suddenDifficultySpikes",
+  "basedOnAnUnfinishedFlashGame",
+  "moreAddictiveThanIntended",
+  "mostlyConsistentSeeds",
+  "achievementPointsDontDoAnything",
+  "youDoNotStartAtLevel",
+  "dontTalkAboutTheManaphyEggIncident",
+  "alsoTryPokengine",
+  "alsoTryEmeraldRogue",
+  "alsoTryRadicalRed",
+  "eeveeExpo",
+  "ynoproject",
+  "breedersInSpace",
+];
+
+//#region Seasonal Messages
+
+const seasonalSplashMessages: Season[] = [
+  {
+    name: "Halloween",
+    start: "09-15",
+    end: "10-31",
+    messages: ["halloween.pumpkaboosAbout", "halloween.mayContainSpiders", "halloween.spookyScaryDuskulls"],
+  },
+  {
+    name: "XMAS",
+    start: "12-01",
+    end: "12-26",
+    messages: ["xmas.happyHolidays", "xmas.delibirdSeason"],
+  },
+  {
+    name: "New Year's",
+    start: "01-01",
+    end: "01-31",
+    messages: ["newYears.happyNewYear"],
+  },
+];
+
+//#endregion
+
 export function getSplashMessages(): string[] {
-  const splashMessages = Array(10).fill(getBattleCountSplashMessage());
-  splashMessages.push(
-    i18next.t("splashMessages:joinTheDiscord"),
-    i18next.t("splashMessages:infiniteLevels"),
-    i18next.t("splashMessages:everythingStacks"),
-    i18next.t("splashMessages:optionalSaveScumming"),
-    i18next.t("splashMessages:biomes"),
-    i18next.t("splashMessages:openSource"),
-    i18next.t("splashMessages:playWithSpeed"),
-    i18next.t("splashMessages:liveBugTesting"),
-    i18next.t("splashMessages:heavyInfluence"),
-    i18next.t("splashMessages:pokemonRiskAndPokemonRain"),
-    i18next.t("splashMessages:nowWithMoreSalt"),
-    i18next.t("splashMessages:infiniteFusionAtHome"),
-    i18next.t("splashMessages:brokenEggMoves"),
-    i18next.t("splashMessages:magnificent"),
-    i18next.t("splashMessages:mubstitute"),
-    i18next.t("splashMessages:thatsCrazy"),
-    i18next.t("splashMessages:oranceJuice"),
-    i18next.t("splashMessages:questionableBalancing"),
-    i18next.t("splashMessages:coolShaders"),
-    i18next.t("splashMessages:aiFree"),
-    i18next.t("splashMessages:suddenDifficultySpikes"),
-    i18next.t("splashMessages:basedOnAnUnfinishedFlashGame"),
-    i18next.t("splashMessages:moreAddictiveThanIntended"),
-    i18next.t("splashMessages:mostlyConsistentSeeds"),
-    i18next.t("splashMessages:achievementPointsDontDoAnything"),
-    i18next.t("splashMessages:youDoNotStartAtLevel"),
-    i18next.t("splashMessages:dontTalkAboutTheManaphyEggIncident"),
-    i18next.t("splashMessages:alsoTryPokengine"),
-    i18next.t("splashMessages:alsoTryEmeraldRogue"),
-    i18next.t("splashMessages:alsoTryRadicalRed"),
-    i18next.t("splashMessages:eeveeExpo"),
-    i18next.t("splashMessages:ynoproject"),
-    i18next.t("splashMessages:breedersInSpace"),
-  );
+  const splashMessages: string[] = [...commonSplashMessages];
+  console.log("use seasonal splash messages", USE_SEASONAL_SPLASH_MESSAGES);
+  if (USE_SEASONAL_SPLASH_MESSAGES) {
+    // add seasonal splash messages if the season is active
+    for (const { name, start, end, messages } of seasonalSplashMessages) {
+      const now = new Date();
+      const startDate = new Date(`${start}-${now.getFullYear()}`);
+      const endDate = new Date(`${end}-${now.getFullYear()}`);
 
-  return splashMessages;
+      if (now >= startDate && now <= endDate) {
+        console.log(`Adding ${messages.length} ${name} splash messages (weight: x${SEASONAL_WEIGHT_MULTIPLIER})`);
+        messages.forEach((message) => {
+          const weightedMessage = Array(SEASONAL_WEIGHT_MULTIPLIER).fill(message);
+          splashMessages.push(...weightedMessage);
+        });
+      }
+    }
+  }
+
+  return splashMessages.map((message) => `splashMessages:${message}`);
 }
diff --git a/src/locales/de/splash-messages.json b/src/locales/de/splash-messages.json
index ac3fd345f3f..ba126393ccb 100644
--- a/src/locales/de/splash-messages.json
+++ b/src/locales/de/splash-messages.json
@@ -1,5 +1,5 @@
 {
-  "battlesWon": "Kämpfe gewonnen!",
+  "battlesWon": "{{count, number}} Kämpfe gewonnen!",
   "joinTheDiscord": "Tritt dem Discord bei!",
   "infiniteLevels": "Unendliche Level!",
   "everythingStacks": "Alles stapelt sich!",
diff --git a/src/locales/en/splash-messages.json b/src/locales/en/splash-messages.json
index c0686e6ad75..168974525f8 100644
--- a/src/locales/en/splash-messages.json
+++ b/src/locales/en/splash-messages.json
@@ -1,5 +1,5 @@
 {
-  "battlesWon": "Battles Won!",
+  "battlesWon": "{{count, number}} Battles Won!",
   "joinTheDiscord": "Join the Discord!",
   "infiniteLevels": "Infinite Levels!",
   "everythingStacks": "Everything Stacks!",
@@ -32,5 +32,17 @@
   "alsoTryRadicalRed": "Also Try Radical Red!",
   "eeveeExpo": "Eevee Expo!",
   "ynoproject": "YNOproject!",
-  "breedersInSpace": "Breeders in space!"
+  "breedersInSpace": "Breeders in space!",
+  "halloween": {
+    "pumpkaboosAbout": "Pumpkaboos about!",
+    "mayContainSpiders": "May contain spiders!",
+    "spookyScaryDuskulls": "Spooky, Scary Duskulls!"
+  },
+  "xmas": {
+    "happyHolidays": "Happy Holidays!",
+    "delibirdSeason": "Delibird Season!"
+  },
+  "newYears": {
+    "happyNewYear": "Happy New Year!"
+  }
 }
\ No newline at end of file
diff --git a/src/locales/es/splash-messages.json b/src/locales/es/splash-messages.json
index b1d4820b06e..da31d394c0f 100644
--- a/src/locales/es/splash-messages.json
+++ b/src/locales/es/splash-messages.json
@@ -1,5 +1,5 @@
 {
-  "battlesWon": "¡Batallas ganadas!",
+  "battlesWon": "¡{{count, number}} Batallas ganadas!",
   "joinTheDiscord": "¡Únete al Discord!",
   "infiniteLevels": "¡Niveles infinitos!",
   "everythingStacks": "¡Todo se acumula!",
diff --git a/src/locales/fr/splash-messages.json b/src/locales/fr/splash-messages.json
index 9dd3e86fb32..2ac85680e58 100644
--- a/src/locales/fr/splash-messages.json
+++ b/src/locales/fr/splash-messages.json
@@ -1,5 +1,5 @@
 {
-  "battlesWon": "combats gagnés !",
+  "battlesWon": "{{count, number}} combats gagnés !",
   "joinTheDiscord": "Rejoins le Discord !",
   "infiniteLevels": "Niveaux infinis !",
   "everythingStacks": "Tout se cumule !",
diff --git a/src/locales/it/splash-messages.json b/src/locales/it/splash-messages.json
index 55018d0ada0..d4b411241b6 100644
--- a/src/locales/it/splash-messages.json
+++ b/src/locales/it/splash-messages.json
@@ -1,5 +1,5 @@
 {
-  "battlesWon": "Battaglie Vinte!",
+  "battlesWon": "{{count, number}} Battaglie Vinte!",
   "joinTheDiscord": "Entra nel Discord!",
   "infiniteLevels": "Livelli Infiniti!",
   "everythingStacks": "Tutto si impila!",
diff --git a/src/locales/ja/splash-messages.json b/src/locales/ja/splash-messages.json
index b7378e7a916..db3948fa2f1 100644
--- a/src/locales/ja/splash-messages.json
+++ b/src/locales/ja/splash-messages.json
@@ -1,5 +1,5 @@
 {
-  "battlesWon": "Battles Won!",
+  "battlesWon": "勝ったバトル：{{count, number}}回！",
   "joinTheDiscord": "Join the Discord!",
   "infiniteLevels": "Infinite Levels!",
   "everythingStacks": "Everything Stacks!",
diff --git a/src/locales/ko/splash-messages.json b/src/locales/ko/splash-messages.json
index 6cf7ce050b7..1e89713ccde 100644
--- a/src/locales/ko/splash-messages.json
+++ b/src/locales/ko/splash-messages.json
@@ -1,5 +1,5 @@
 {
-  "battlesWon": "전투에서 승리하세요!",
+  "battlesWon": "{{count, number}} 전투에서 승리하세요!",
   "joinTheDiscord": "디스코드에 가입하세요!",
   "infiniteLevels": "무한한 레벨!",
   "everythingStacks": "모든 것이 누적됩니다!",
diff --git a/src/locales/pt_BR/splash-messages.json b/src/locales/pt_BR/splash-messages.json
index 55c0b1b9e74..237b0f21202 100644
--- a/src/locales/pt_BR/splash-messages.json
+++ b/src/locales/pt_BR/splash-messages.json
@@ -1,5 +1,5 @@
 {
-  "battlesWon": "Batalhas Ganhas!",
+  "battlesWon": "{{count, number}} Batalhas Ganhas!",
   "joinTheDiscord": "Junte-se ao Discord!",
   "infiniteLevels": "Níveis Infinitos!",
   "everythingStacks": "Tudo Acumula!",
diff --git a/src/locales/zh_CN/splash-messages.json b/src/locales/zh_CN/splash-messages.json
index 4d2d208edfd..24981513afe 100644
--- a/src/locales/zh_CN/splash-messages.json
+++ b/src/locales/zh_CN/splash-messages.json
@@ -1,5 +1,5 @@
 {
-  "battlesWon": "场胜利！",
+  "battlesWon": "{{count, number}} 场胜利！",
   "joinTheDiscord": "加入Discord！",
   "infiniteLevels": "等级无限！",
   "everythingStacks": "道具全部叠加！",
diff --git a/src/locales/zh_TW/splash-messages.json b/src/locales/zh_TW/splash-messages.json
index a25e7dab97b..60b03549c2f 100644
--- a/src/locales/zh_TW/splash-messages.json
+++ b/src/locales/zh_TW/splash-messages.json
@@ -1,5 +1,5 @@
 {
-  "battlesWon": "勝利場數！",
+  "battlesWon": "{{count, number}} 勝利場數！",
   "joinTheDiscord": "加入Discord！",
   "infiniteLevels": "無限等級！",
   "everythingStacks": "所有效果都能疊加！",
diff --git a/src/test/data/splash_messages.test.ts b/src/test/data/splash_messages.test.ts
new file mode 100644
index 00000000000..7e07b9a6e77
--- /dev/null
+++ b/src/test/data/splash_messages.test.ts
@@ -0,0 +1,66 @@
+import { getSplashMessages } from "#app/data/splash-messages";
+import { describe, expect, it, vi, afterEach, beforeEach } from "vitest";
+import * as Constants from "#app/constants";
+
+describe("Data - Splash Messages", () => {
+  it("should contain at least 15 splash messages", () => {
+    expect(getSplashMessages().length).toBeGreaterThanOrEqual(15);
+  });
+
+  // make sure to adjust this test if the weight it changed!
+  it("should add contain 10 `battlesWon` splash messages", () => {
+    const battlesWonMessages = getSplashMessages().filter((message) => message === "splashMessages:battlesWon");
+    expect(battlesWonMessages).toHaveLength(10);
+  });
+
+  describe("Seasonal", () => {
+    beforeEach(() => {
+      vi.spyOn(Constants, "USE_SEASONAL_SPLASH_MESSAGES", "get").mockReturnValue(true);
+    });
+
+    afterEach(() => {
+      vi.useRealTimers(); // reset system time
+    });
+
+    it("should contain halloween messages from Sep 15 to Oct 31", () => {
+      testSeason(new Date("2024-09-15"), new Date("2024-10-31"), "halloween");
+    });
+
+    it("should contain xmas messages from Dec 1 to Dec 26", () => {
+      testSeason(new Date("2024-12-01"), new Date("2024-12-26"), "xmas");
+    });
+
+    it("should contain new years messages frm Jan 1 to Jan 31", () => {
+      testSeason(new Date("2024-01-01"), new Date("2024-01-31"), "newYears");
+    });
+  });
+});
+
+/**
+ * Helpoer method to test seasonal messages
+ * @param startDate The seasons start date
+ * @param endDate The seasons end date
+ * @param prefix the splash message prefix (e.g. `newYears` or `xmas`)
+ */
+function testSeason(startDate: Date, endDate: Date, prefix: string) {
+  const filterFn = (message: string) => message.startsWith(`splashMessages:${prefix}.`);
+
+  const beforeDate = new Date(startDate);
+  beforeDate.setDate(startDate.getDate() - 1);
+
+  const afterDate = new Date(endDate);
+  afterDate.setDate(endDate.getDate() + 1);
+
+  const dates: Date[] = [beforeDate, startDate, endDate, afterDate];
+  const [before, start, end, after] = dates.map((date) => {
+    vi.setSystemTime(date);
+    console.log("System time set to", date);
+    const count = getSplashMessages().filter(filterFn).length;
+    return count;
+  });
+
+  expect(before).toBe(0);
+  expect(start).toBeGreaterThanOrEqual(10); // make sure to adjust if weight is changed!
+  expect(end).toBeGreaterThanOrEqual(10); // make sure to adjust if weight is changed!
+  expect(after).toBe(0);
+}
diff --git a/src/test/vitest.setup.ts b/src/test/vitest.setup.ts
index 3bb5c240d94..74129f20d26 100644
--- a/src/test/vitest.setup.ts
+++ b/src/test/vitest.setup.ts
@@ -14,6 +14,8 @@ import { initStatsKeys } from "#app/ui/game-stats-ui-handler";
 import { initMysteryEncounters } from "#app/data/mystery-encounters/mystery-encounters";
 import { beforeAll, vi } from "vitest";
 
+process.env.TZ = "UTC";
+
 /** Mock the override import to always return default values, ignoring any custom overrides. */
 vi.mock("#app/overrides", async (importOriginal) => {
   const { defaultOverrides } = await importOriginal<typeof import("#app/overrides")>();
diff --git a/src/ui/title-ui-handler.ts b/src/ui/title-ui-handler.ts
index 67a4f7260e6..a85e670eaba 100644
--- a/src/ui/title-ui-handler.ts
+++ b/src/ui/title-ui-handler.ts
@@ -3,11 +3,14 @@ import OptionSelectUiHandler from "./settings/option-select-ui-handler";
 import { Mode } from "./ui";
 import * as Utils from "../utils";
 import { TextStyle, addTextObject, getTextStyleOptions } from "./text";
-import { getBattleCountSplashMessage, getSplashMessages } from "../data/splash-messages";
+import { getSplashMessages } from "../data/splash-messages";
 import i18next from "i18next";
 import { TimedEventDisplay } from "#app/timed-event-manager";
 
 export default class TitleUiHandler extends OptionSelectUiHandler {
+  /** If the stats can not be retrieved, use this fallback value */
+  private static readonly BATTLES_WON_FALLBACK: number = -99999999;
+
   private titleContainer: Phaser.GameObjects.Container;
   private playerCountLabel: Phaser.GameObjects.Text;
   private splashMessage: string;
@@ -72,8 +75,8 @@ export default class TitleUiHandler extends OptionSelectUiHandler {
       .then(request => request.json())
       .then(stats => {
         this.playerCountLabel.setText(`${stats.playerCount} ${i18next.t("menu:playersOnline")}`);
-        if (this.splashMessage === getBattleCountSplashMessage()) {
-          this.splashMessageText.setText(getBattleCountSplashMessage().replace("{COUNT}", stats.battleCount.toLocaleString("en-US")));
+        if (this.splashMessage === "splashMessages:battlesWon") {
+          this.splashMessageText.setText(i18next.t(this.splashMessage, { count: stats.battlesWon }));
         }
       })
       .catch(err => {
@@ -86,7 +89,7 @@ export default class TitleUiHandler extends OptionSelectUiHandler {
 
     if (ret) {
       this.splashMessage = Utils.randItem(getSplashMessages());
-      this.splashMessageText.setText(this.splashMessage.replace("{COUNT}", "?"));
+      this.splashMessageText.setText(i18next.t(this.splashMessage, { count: TitleUiHandler.BATTLES_WON_FALLBACK }));
 
       const ui = this.getUi();