diff --git a/yt_dlp/extractor/steam.py b/yt_dlp/extractor/steam.py
index 71d94815e7..241b463ce1 100644
--- a/yt_dlp/extractor/steam.py
+++ b/yt_dlp/extractor/steam.py
@@ -8,15 +8,12 @@ from ..utils import (
     extract_attributes,
     join_nonempty,
     js_to_json,
+    parse_resolution,
     str_or_none,
+    url_basename,
     url_or_none,
 )
-from ..utils.traversal import (
-    find_element,
-    find_elements,
-    traverse_obj,
-    trim_str,
-)
+from ..utils.traversal import find_element, traverse_obj
 
 
 class SteamIE(InfoExtractor):
@@ -27,7 +24,7 @@ class SteamIE(InfoExtractor):
             'id': '105600',
             'title': 'Terraria',
         },
-        'playlist_mincount': 3,
+        'playlist_mincount': 4,
     }, {
         'url': 'https://store.steampowered.com/app/271590/Grand_Theft_Auto_V/',
         'info_dict': {
@@ -45,29 +42,40 @@ class SteamIE(InfoExtractor):
         self._set_cookie('store.steampowered.com', 'lastagecheckage', '1-January-2000')
 
         webpage = self._download_webpage(url, app_id)
-        app_name = traverse_obj(webpage, ({find_element(cls='apphub_AppName')}, {clean_html}))
+        data_props = traverse_obj(webpage, (
+            {find_element(cls='gamehighlight_desktopcarousel', html=True)},
+            {extract_attributes}, 'data-props', {json.loads}, {dict}))
+        app_name = traverse_obj(data_props, ('appName', {clean_html}))
 
         entries = []
-        for data_prop in traverse_obj(webpage, (
-            {find_elements(cls='highlight_player_item highlight_movie', html=True)},
-            ..., {extract_attributes}, 'data-props', {json.loads}, {dict},
-        )):
+        for trailer in data_props['trailers']:
+            movie_id = traverse_obj(trailer, ('id', {str_or_none}))
+
+            thumbnails = []
+            for thumbnail_url in traverse_obj(trailer, (
+                ('poster', 'thumbnail'), {url_or_none},
+            )):
+                thumbnails.append({
+                    'url': thumbnail_url,
+                    **parse_resolution(url_basename(thumbnail_url)),
+                })
+
             formats = []
-            if hls_manifest := traverse_obj(data_prop, ('hlsManifest', {url_or_none})):
+            if hls_manifest := traverse_obj(trailer, ('hlsManifest', {url_or_none})):
                 formats.extend(self._extract_m3u8_formats(
                     hls_manifest, app_id, 'mp4', m3u8_id='hls', fatal=False))
-            for dash_manifest in traverse_obj(data_prop, ('dashManifests', ..., {url_or_none})):
+            for dash_manifest in traverse_obj(trailer, ('dashManifests', ..., {url_or_none})):
                 formats.extend(self._extract_mpd_formats(
                     dash_manifest, app_id, mpd_id='dash', fatal=False))
+            self._remove_duplicate_formats(formats)
 
-            movie_id = traverse_obj(data_prop, ('id', {trim_str(start='highlight_movie_')}))
             entries.append({
-                'id': movie_id,
+                'id': join_nonempty(app_id, movie_id),
                 'title': join_nonempty(app_name, 'video', movie_id, delim=' '),
                 'formats': formats,
                 'series': app_name,
                 'series_id': app_id,
-                'thumbnail': traverse_obj(data_prop, ('screenshot', {url_or_none})),
+                'thumbnails': thumbnails,
             })
 
         return self.playlist_result(entries, app_id, app_name)