It's a part of JL 0.93b or also 0.93.
In the backend select predicitongames instead of League management.
Then you only need to add the frontend links the same way as it is done with the other frontend links of JL.
Add a menu item in Joomla by adding an URL like
where p=263 the project id of the selected project is.
For more info just try to use the serach function here in the forum. There should be more than one answer on any kind of questions about the prediction game