diff --git a/steam/steamid.py b/steam/steamid.py
index d41e772..34cb144 100644
--- a/steam/steamid.py
+++ b/steam/steamid.py
@@ -551,12 +551,12 @@ def steam64_from_url(url, http_timeout=30):
         https://steamcommunity.com/profiles/[U:1:12]
         https://steamcommunity.com/profiles/76561197960265740
         https://steamcommunity.com/id/johnc
-        https://steamcommunity.com/user/r
         https://steamcommunity.com/user/cv-dgb/
+        https://steamcommunity.com/app/570
     """
 
     match = re.match(r'^(?P<clean_url>https?://steamcommunity.com/'
-                     r'(?P<type>profiles|id|gid|groups|user)/(?P<value>.*?))(?:/(?:.*)?)?$', url)
+                     r'(?P<type>profiles|id|gid|groups|user|app)/(?P<value>.*?))(?:/(?:.*)?)?$', url)
 
     if not match:
         return None