diff --git a/scripts/steam_deploy.sh b/scripts/steam_deploy.sh
new file mode 100755
index 00000000..138885f2
--- /dev/null
+++ b/scripts/steam_deploy.sh
@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+APP_ID=4435320
+DEPOT_WIN=4435321
+DEPOT_LINUX=4435322
+REPO="edde746/plezy"
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+WORK="$SCRIPT_DIR/build"
+
+# Get latest release tag
+TAG=$(gh release view --repo "$REPO" --json tagName -q .tagName)
+echo "Latest release: $TAG"
+
+rm -rf "$WORK"
+mkdir -p "$WORK"
+
+# Download & extract
+echo "Downloading Windows build..."
+gh release download "$TAG" --repo "$REPO" -p "plezy-windows-x64-portable.7z" -D "$WORK"
+if [[ "$OSTYPE" == "darwin"* ]]; then
+    unar -o "$WORK" "$WORK/plezy-windows-x64-portable.7z"
+else
+    7z x "$WORK/plezy-windows-x64-portable.7z" -o"$WORK" -y
+fi
+mv "$WORK"/plezy-windows-x64-portable "$WORK/windows"
+
+echo "Downloading Linux build..."
+gh release download "$TAG" --repo "$REPO" -p "plezy-linux-x64.tar.gz" -D "$WORK"
+mkdir -p "$WORK/linux"
+tar xzf "$WORK/plezy-linux-x64.tar.gz" -C "$WORK/linux"
+
+# Generate VDF files
+cat > "$WORK/app_build.vdf" <<EOF
+"appbuild"
+{
+    "appid" "$APP_ID"
+    "desc" "$TAG"
+    "buildoutput" "$WORK/output"
+    "contentroot" "$WORK"
+    "setlive" "public"
+    "depots"
+    {
+        "$DEPOT_WIN"
+        {
+            "FileMapping"
+            {
+                "LocalPath" "windows/*"
+                "DepotPath" "."
+                "recursive" "1"
+            }
+        }
+        "$DEPOT_LINUX"
+        {
+            "FileMapping"
+            {
+                "LocalPath" "linux/*"
+                "DepotPath" "."
+                "recursive" "1"
+            }
+        }
+    }
+}
+EOF
+
+mkdir -p "$WORK/output"
+
+echo "Uploading to Steam..."
+steamcmd +login "$STEAM_USER" +run_app_build "$WORK/app_build.vdf" +quit
+
+echo "Done! Uploaded $TAG to Steam."