Yeah, Realflight G2 is the second generation sim. It's WAY better than the first but as mentioned earlier, you do need a fairly hot computer to run it. If it's jerky on your computer you can shut off most of the background stuff to make it run smoother. I have mine running on a Pentium II 450 with 128 megs of RAM and I had to shut off almost all of the background items to get the planes to fly smooth.