Qantas has released a free simulator for mobile and desktop (You need both of them.) This sim allows you to fly the new Qantas dreamliner through rings.
Play at https://dreamliner.qantas.com/fly
Quick tutorial: Qantas on Instagram: "Up, up and away! To celebrate the inaugural flight of our first #QantasDreamliner from Melbourne to Los Angeles in ten days, we’ve created a new game that puts you in the pilot seat. Feeling up for the challenge? Let’s see how far you can fly."
What makes this better than IF? Well there is music in the background, there are clouds and you can fly at 11.76km/s without that stupid overspeed warning