can anyone install xmodgames?I have tried lots of time but fail

I sure follow the manual as below

Requirements:
1 Jailbroken iDevice
2 Cydia Substrate
3 xmodgames

Instructions for Installation in iDevice:
1 Tap software sources.
2 Tap “EDIT”then “Add”.
3 Enter Cydia/APT URL http://apt.xmodgames.com.
4 Install xmodgames.
5 Launch the app.
6 Enjoy!