Top Las Vegas thrill rides: SkyJump at The Strat (controlled freefall from 855 feet, $120+), X-Scream (dangles riders over the edge of The Strat at 866 feet), Insanity (spinning arm extending 64 feet over the edge), Big Apple Coaster at New York-New York (360-degree loop, $17), and the 1,000-foot observation deck at The Strat.