diff --git a/backlogger/migrations/0010_item_steam_appid.py b/backlogger/migrations/0010_item_steam_appid.py
new file mode 100644
index 0000000..b4eac20
--- /dev/null
+++ b/backlogger/migrations/0010_item_steam_appid.py
@@ -0,0 +1,16 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('backlogger', '0009_userprofile'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='item',
+            name='steam_appid',
+            field=models.IntegerField(blank=True, null=True),
+        ),
+    ]
diff --git a/backlogger/models.py b/backlogger/models.py
index 2391dc3..0d7b1e4 100644
--- a/backlogger/models.py
+++ b/backlogger/models.py
@@ -60,6 +60,9 @@ class Item(models.Model):
     watched = models.BooleanField(null=True, blank=True)
     duration_minutes = models.IntegerField(null=True, blank=True)
 
+    # Steam
+    steam_appid = models.IntegerField(null=True, blank=True)
+
     # HowLongToBeat estimates (games only)
     hltb_main = models.FloatField(null=True, blank=True)
     hltb_extra = models.FloatField(null=True, blank=True)
diff --git a/backlogger/templates/backlogger/list.html b/backlogger/templates/backlogger/list.html
index ddd02ae..75b8490 100644
--- a/backlogger/templates/backlogger/list.html
+++ b/backlogger/templates/backlogger/list.html
@@ -202,7 +202,20 @@
       {% if request.GET.imported %}
       <span style="font-size:0.82rem;color:#34d399">&#10003; {{ request.GET.imported }} game{{ request.GET.imported|pluralize }} imported</span>
       {% endif %}
-      <a href="{% url 'backlogger:steam_login' %}" class="btn btn-outline" style="font-size:0.82rem">&#9654; Steam</a>
+      {% if request.GET.synced %}
+      <span style="font-size:0.82rem;color:#34d399">&#10003; {{ request.GET.synced }} game{{ request.GET.synced|pluralize }} synced</span>
+      {% endif %}
+      {% if request.GET.sync_error %}
+      <span style="font-size:0.82rem;color:#f87171">Steam sync failed</span>
+      {% endif %}
+      <a href="{% url 'backlogger:steam_sync_login' %}" class="btn btn-outline" style="font-size:0.82rem" title="Sync hours played from Steam">&#8635; Sync</a>
+      <a href="{% url 'backlogger:steam_login' %}" class="btn btn-outline" style="font-size:0.82rem">&#9654; Import</a>
+      {% if debug %}
+      <form method="post" action="{% url 'backlogger:debug_delete_all' %}" onsubmit="return confirm('Delete ALL items?')">
+        {% csrf_token %}
+        <button type="submit" class="btn btn-danger" style="font-size:0.82rem">&#128465; Delete all</button>
+      </form>
+      {% endif %}
       <a href="{% url 'backlogger:add' %}" class="btn btn-primary">+ Add item</a>
     </div>
   </div>
@@ -229,6 +242,7 @@
         <option value="newest"   {% if sort == 'newest'   %}selected{% endif %}>Newest first</option>
         <option value="oldest"   {% if sort == 'oldest'   %}selected{% endif %}>Oldest first</option>
         <option value="progress" {% if sort == 'progress' %}selected{% endif %}>Most complete</option>
+        <option value="updated"   {% if sort == 'updated'   %}selected{% endif %}>Recently updated</option>
       </select>
     </div>
   </div>
diff --git a/backlogger/urls.py b/backlogger/urls.py
index efa6eff..20e2f43 100644
--- a/backlogger/urls.py
+++ b/backlogger/urls.py
@@ -12,4 +12,7 @@ urlpatterns = [
     path('steam/login/', views.steam_login, name='steam_login'),
     path('steam/callback/', views.steam_callback, name='steam_callback'),
     path('steam/import/', views.steam_import, name='steam_import'),
+    path('debug/delete-all/', views.debug_delete_all, name='debug_delete_all'),
+    path('steam/sync/', views.steam_sync_login, name='steam_sync_login'),
+    path('steam/sync/callback/', views.steam_sync_callback, name='steam_sync_callback'),
 ]
diff --git a/backlogger/views.py b/backlogger/views.py
index 2732b85..624e6cb 100644
--- a/backlogger/views.py
+++ b/backlogger/views.py
@@ -28,6 +28,7 @@ SORT_MAP = {
     'newest':   ['-created_at'],
     'oldest':   ['created_at'],
     'progress': ['-progress_percent'],
+    'updated':  ['-updated_at'],
 }
 
 
@@ -65,6 +66,7 @@ def item_list(request):
         'sort': sort,
         'shelf': shelf,
         'categories': Item.CATEGORY_CHOICES,
+        'debug': settings.DEBUG,
     })
 
 
@@ -180,9 +182,58 @@ def steam_import(request):
             name=game['name'],
             hours_played=hours,
             progress_percent=progress,
+            steam_appid=game['appid'],
         )
         hltb_api.apply_to_item(item)
         imported += 1
 
     del request.session['steam_games']
     return redirect(f"{reverse('backlogger:list')}?category=games&imported={imported}")
+
+
+@login_required
+def debug_delete_all(request):
+    if not settings.DEBUG:
+        return redirect('backlogger:list')
+    if request.method == 'POST':
+        Item.objects.filter(user=request.user).delete()
+    return redirect('backlogger:list')
+
+
+@login_required
+def steam_sync_login(request):
+    callback = request.build_absolute_uri(reverse('backlogger:steam_sync_callback'))
+    realm = f"{request.scheme}://{request.get_host()}"
+    return redirect(steam_api.build_auth_url(callback, realm))
+
+
+@login_required
+def steam_sync_callback(request):
+    steam_id = steam_api.verify_and_get_steam_id(request.GET.dict())
+    if not steam_id:
+        return redirect(f"{reverse('backlogger:list')}?sync_error=1")
+
+    api_key = getattr(settings, 'STEAM_API_KEY', '')
+    if not api_key:
+        return redirect(f"{reverse('backlogger:list')}?sync_error=1")
+
+    try:
+        games = steam_api.get_owned_games(api_key, steam_id)
+    except Exception:
+        return redirect(f"{reverse('backlogger:list')}?sync_error=1")
+
+    hours_by_appid = {
+        g['appid']: round(g.get('playtime_forever', 0) / 60, 1)
+        for g in games
+    }
+
+    steam_items = Item.objects.filter(user=request.user, steam_appid__isnull=False)
+    synced = 0
+    for item in steam_items:
+        new_hours = hours_by_appid.get(item.steam_appid)
+        if new_hours is not None and new_hours != item.hours_played:
+            item.hours_played = new_hours
+            item.save(update_fields=['hours_played', 'updated_at'])
+            synced += 1
+
+    return redirect(f"{reverse('backlogger:list')}?category=games&synced={synced}")