<member type="method" namespace="Steamworks" parent="SteamApps" name="IsAppInstalled" static="true"> <member category="interface" type="method" namespace="Steamworks" parent="SteamApps" name="IsAppInstalled" static="true"> <args> <arg name="appid" type="AppId"></arg> </args> <return type="bool"></return> <summary>The app may not actually be owned by the current user, they may have it left over from a free weekend, etc.</summary> </member>