Redirect URL

When users registers or log in to my site, they will not be directed to a site, where they can play the game in my website. They will instead be directed to their profil site? How can I fix this? I have already sat the “After Registration Redirect URL” to my game-site. Can I at least make a button on the profile site, where the users can click on it, then they will be directed to the game-site?

The page I need help with: [log in to see the link]