All of the destinations for online poker in the United States have ring games, sit n' gos, and multi-table tournaments although certain formats are more popular at different sites than at others. There are several places in the U.S. market that spread lottery SNGs reminiscent of PokerStars Spin & Gos too. Fast-fold Zoom/RUSH clones are a bit less prevalent, but there are a couple of choices if this is your game type of choice.