Are there any? I have the feeling there are only ipad air games, but not ipad air 2 games that make use of the new powerful GPU.
One would kind of like to see that but simple economics mean it will likely never happen. For iOS to move forward as a gaming platform, it would be better if more games were made optimized for perhaps the two latest generations and wouldn't run on earlier hardware or included adjustable graphic options as seen in Oddworld: Stranger's Wrath and Forgotten Memories, among others.
Football Manager Classic 2015 is probably he best example of this. It will only run on the air devices and there is no intention to add older support.
I am very disappointed with that. I can't see a real gain with my Ipad Air 2 over my last Ipad Air. Games like Assphalt 8 run with the same problems.