This is a gist demonstrating how you can create a duplicate of a project

create_duplicate_project_git

In your case, I would suggest going with [submodules](https://stackoverflow.com/a/19279658/403401). However to answer your exact question, here's how you should proceed.

1. Start by creating `Jeremy/MyShooter` and `Jeremy/MyRPG` on Github. Keep them empty.

2. Clone your origin project on your system, twice, giving it different names


        $ git clone http://github.com/Bob/CoolFramework MyShooter
        $ git clone http://github.com/Bob/CoolFramework MyRPG

3. You now have 2 different local repos pointing to the same origin. You should remove the origin and point to yours as a remote:

        $ cd MyShooter
        $ git remote remove origin
        $ git remote add origin http://github.com/Jeremy/MyShooter.git
        $ git push -u origin master

4. Don't forget to do the same for `MyRPG`