Hi leryan,
You are able to play full tee-to-green stroke play on Bethpage, Kiawah Island and the Front 9 of St. Andrews right now. The other courses you see are closest-to-the-hole skill competitions
where you try to gain the lowest score across 9 different skill
challenges.
Soon we'll be adding Oakmont and the Back 9 of St. Andrews to the tee-to-green and with our recent USGA partnership announcement you can expect more championship courses in the future. =)