diff --git a/packages/web/src/app/(auth)/manager/page.tsx b/packages/web/src/app/(auth)/manager/page.tsx
index 7394158..b937c70 100644
--- a/packages/web/src/app/(auth)/manager/page.tsx
+++ b/packages/web/src/app/(auth)/manager/page.tsx
@@ -5,6 +5,7 @@ import { STATUS } from "@rahoot/common/types/game/status"
 import ManagerPassword from "@rahoot/web/components/game/create/ManagerPassword"
 import QuizEditor from "@rahoot/web/components/game/create/QuizEditor"
 import MediaLibrary from "@rahoot/web/components/game/create/MediaLibrary"
+import ThemeEditor from "@rahoot/web/components/game/create/ThemeEditor"
 import SelectQuizz from "@rahoot/web/components/game/create/SelectQuizz"
 import { useEvent, useSocket } from "@rahoot/web/contexts/socketProvider"
 import { useManagerStore } from "@rahoot/web/stores/manager"
@@ -20,6 +21,7 @@ const Manager = () => {
   const [quizzList, setQuizzList] = useState<QuizzWithId[]>([])
   const [showEditor, setShowEditor] = useState(false)
   const [showMedia, setShowMedia] = useState(false)
+  const [showTheme, setShowTheme] = useState(false)
 
   useEvent("manager:quizzList", (quizzList) => {
     setIsAuth(true)
@@ -69,12 +71,17 @@ const Manager = () => {
     )
   }
 
+  if (showTheme) {
+    return <ThemeEditor onBack={() => setShowTheme(false)} />
+  }
+
   return (
     <SelectQuizz
       quizzList={quizzList}
       onSelect={handleCreate}
       onManage={() => setShowEditor(true)}
       onMedia={() => setShowMedia(true)}
+      onTheme={() => setShowTheme(true)}
     />
   )
 }
diff --git a/packages/web/src/components/game/GameWrapper.tsx b/packages/web/src/components/game/GameWrapper.tsx
index 50ea048..c08ec88 100644
--- a/packages/web/src/components/game/GameWrapper.tsx
+++ b/packages/web/src/components/game/GameWrapper.tsx
@@ -7,9 +7,9 @@ import Loader from "@rahoot/web/components/Loader"
 import { useEvent, useSocket } from "@rahoot/web/contexts/socketProvider"
 import { usePlayerStore } from "@rahoot/web/stores/player"
 import { useQuestionStore } from "@rahoot/web/stores/question"
+import { useThemeStore } from "@rahoot/web/stores/theme"
 import { MANAGER_SKIP_BTN } from "@rahoot/web/utils/constants"
 import clsx from "clsx"
-import Image from "next/image"
 import { PropsWithChildren, useEffect, useState } from "react"
 
 type Props = PropsWithChildren & {
@@ -37,6 +37,7 @@ const GameWrapper = ({
   const { isConnected } = useSocket()
   const { player } = usePlayerStore()
   const { questionStates, setQuestionStates } = useQuestionStore()
+  const { backgroundUrl } = useThemeStore()
   const [isDisabled, setIsDisabled] = useState(false)
   const next = statusName ? MANAGER_SKIP_BTN[statusName] : null
 
@@ -56,14 +57,21 @@ const GameWrapper = ({
     onNext?.()
   }
 
+  const resolvedBackground = backgroundUrl || background.src
+
   return (
     <section className="relative flex min-h-screen w-full flex-col justify-between">
-      <div className="fixed top-0 left-0 -z-10 h-full w-full bg-orange-600 opacity-70">
-        <Image
-          className="pointer-events-none h-full w-full object-cover opacity-60"
-          src={background}
-          alt="background"
-        />
+      <div
+        className="fixed top-0 left-0 -z-10 h-full w-full bg-orange-600 opacity-70"
+        style={{
+          backgroundImage: `url(${resolvedBackground})`,
+          backgroundSize: "cover",
+          backgroundPosition: "center",
+          backgroundRepeat: "no-repeat",
+          opacity: 0.7,
+        }}
+      >
+        <div className="h-full w-full bg-black/10" />
       </div>
 
       {!isConnected && !statusName ? (
diff --git a/packages/web/src/components/game/create/SelectQuizz.tsx b/packages/web/src/components/game/create/SelectQuizz.tsx
index c6cfb09..cfe6936 100644
--- a/packages/web/src/components/game/create/SelectQuizz.tsx
+++ b/packages/web/src/components/game/create/SelectQuizz.tsx
@@ -9,9 +9,16 @@ type Props = {
   onSelect: (_id: string) => void
   onManage?: () => void
   onMedia?: () => void
+  onTheme?: () => void
 }
 
-const SelectQuizz = ({ quizzList, onSelect, onManage, onMedia }: Props) => {
+const SelectQuizz = ({
+  quizzList,
+  onSelect,
+  onManage,
+  onMedia,
+  onTheme,
+}: Props) => {
   const [selected, setSelected] = useState<string | null>(null)
 
   const handleSelect = (id: string) => () => {
@@ -45,6 +52,14 @@ const SelectQuizz = ({ quizzList, onSelect, onManage, onMedia }: Props) => {
               Media
             </button>
           )}
+          {onTheme && (
+            <button
+              className="text-sm font-semibold text-amber-700 underline"
+              onClick={onTheme}
+            >
+              Theme
+            </button>
+          )}
           {onManage && (
             <button
               className="text-sm font-semibold text-primary underline"
diff --git a/packages/web/src/components/game/create/ThemeEditor.tsx b/packages/web/src/components/game/create/ThemeEditor.tsx
new file mode 100644
index 0000000..bc69515
--- /dev/null
+++ b/packages/web/src/components/game/create/ThemeEditor.tsx
@@ -0,0 +1,166 @@
+"use client"
+
+import background from "@rahoot/web/assets/background.webp"
+import Button from "@rahoot/web/components/Button"
+import { useThemeStore } from "@rahoot/web/stores/theme"
+import clsx from "clsx"
+import Image from "next/image"
+import { useEffect, useMemo, useState } from "react"
+
+type MediaItem = {
+  fileName: string
+  url: string
+  size: number
+  mime: string
+  type: string
+}
+
+type Props = {
+  onBack: () => void
+}
+
+const ThemeEditor = ({ onBack }: Props) => {
+  const { backgroundUrl, setBackground, reset } = useThemeStore()
+  const [customUrl, setCustomUrl] = useState("")
+  const [items, setItems] = useState<MediaItem[]>([])
+  const [loading, setLoading] = useState(false)
+
+  const previewUrl = useMemo(
+    () => backgroundUrl || customUrl || background.src,
+    [backgroundUrl, customUrl],
+  )
+
+  const load = async () => {
+    setLoading(true)
+    try {
+      const res = await fetch("/api/media", { cache: "no-store" })
+      const data = await res.json()
+      if (!res.ok) throw new Error(data.error || "Failed to load media")
+      const onlyImages = (data.media || []).filter(
+        (item: MediaItem) => item.mime?.startsWith("image/"),
+      )
+      setItems(onlyImages)
+    } catch (error) {
+      console.error(error)
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  useEffect(() => {
+    load()
+  }, [])
+
+  const handleSet = (url: string) => {
+    if (!url) return
+    setBackground(url)
+  }
+
+  const handleApplyCustom = () => {
+    if (!customUrl.trim()) return
+    handleSet(customUrl.trim())
+  }
+
+  const handleReset = () => {
+    reset()
+    setCustomUrl("")
+  }
+
+  return (
+    <div className="flex w-full flex-col gap-4">
+      <div className="flex items-center gap-2">
+        <button
+          onClick={onBack}
+          className="rounded-md bg-gray-700 px-3 py-2 text-white"
+        >
+          Back
+        </button>
+        <h2 className="text-xl font-semibold">Theme editor</h2>
+      </div>
+
+      <div className="grid gap-4 lg:grid-cols-2">
+        <div className="space-y-3 rounded-md border border-gray-200 bg-white p-4 shadow-sm">
+          <h3 className="text-lg font-semibold text-gray-800">Preview</h3>
+          <div className="relative h-60 w-full overflow-hidden rounded-md border border-gray-100 bg-gray-50">
+            <Image
+              src={previewUrl}
+              alt="Background preview"
+              fill
+              className="object-cover"
+              sizes="100vw"
+              unoptimized
+            />
+            <div className="absolute inset-0 bg-black/20" />
+            <div className="absolute inset-0 flex items-center justify-center text-white">
+              <span className="rounded bg-black/50 px-3 py-1 text-sm font-semibold">
+                Current background
+              </span>
+            </div>
+          </div>
+          <div className="flex gap-2">
+            <Button className="bg-gray-700" onClick={handleReset}>
+              Reset to default
+            </Button>
+            <Button className="bg-primary" onClick={handleApplyCustom}>
+              Apply custom URL
+            </Button>
+          </div>
+          <input
+            value={customUrl}
+            onChange={(e) => setCustomUrl(e.target.value)}
+            placeholder="https://example.com/background.webp or /media/your-file"
+            className="w-full rounded-md border border-gray-300 px-3 py-2 text-sm"
+          />
+          <p className="text-sm text-gray-600">
+            Paste any reachable image URL (including your uploaded media path). Changes apply immediately to the game background.
+          </p>
+        </div>
+
+        <div className="space-y-3 rounded-md border border-gray-200 bg-white p-4 shadow-sm">
+          <div className="flex items-center justify-between">
+            <div>
+              <h3 className="text-lg font-semibold text-gray-800">Images from media library</h3>
+              <p className="text-sm text-gray-500">Pick any uploaded image as the background.</p>
+            </div>
+            <Button className="bg-gray-700" onClick={load} disabled={loading}>
+              {loading ? "Refreshing..." : "Refresh"}
+            </Button>
+          </div>
+
+          <div className="grid gap-3 sm:grid-cols-2">
+            {items.map((item) => (
+              <button
+                key={item.fileName}
+                className={clsx(
+                  "relative h-32 overflow-hidden rounded-md border border-gray-200 bg-gray-50 text-left shadow-sm transition hover:border-primary",
+                  backgroundUrl === item.url && "ring-2 ring-primary",
+                )}
+                onClick={() => handleSet(item.url)}
+              >
+                <Image
+                  src={item.url}
+                  alt={item.fileName}
+                  fill
+                  className="object-cover"
+                  sizes="200px"
+                  unoptimized
+                />
+                <div className="absolute inset-0 bg-gradient-to-t from-black/50 via-black/0" />
+                <div className="absolute bottom-2 left-2 right-2 text-xs font-semibold text-white drop-shadow">
+                  {item.fileName}
+                </div>
+              </button>
+            ))}
+            {!loading && items.length === 0 && (
+              <div className="rounded-md border border-dashed border-gray-300 p-4 text-sm text-gray-500">
+                No images uploaded yet. Upload an image in the Media page, then pick it here.
+              </div>
+            )}
+          </div>
+        </div>
+      </div>
+    </div>
+  )
+}
+
+export default ThemeEditor
diff --git a/packages/web/src/stores/theme.tsx b/packages/web/src/stores/theme.tsx
new file mode 100644
index 0000000..d8f32d0
--- /dev/null
+++ b/packages/web/src/stores/theme.tsx
@@ -0,0 +1,19 @@
+import { create } from "zustand"
+import { persist } from "zustand/middleware"
+
+type ThemeState = {
+  backgroundUrl: string | null
+  setBackground: (_url: string | null) => void
+  reset: () => void
+}
+
+export const useThemeStore = create<ThemeState>()(
+  persist(
+    (set) => ({
+      backgroundUrl: null,
+      setBackground: (backgroundUrl) => set({ backgroundUrl }),
+      reset: () => set({ backgroundUrl: null }),
+    }),
+    { name: "theme-preferences" },
+  ),
+)