The App Store doesn't indicate that there are IAP. It sounds like there is one to unlock all the games, can anyone confirm that, and the cost? I had a Vectrex ages ago.
Just picked it up. Seems to work on on my 6plus running 9.2.1 The controls seem awkward. There's option to adjust but so far the dpad control is not actually visible. There doesn't appear to be any IAP.
There was IAP in the initial release. They appear to have just bundled it all into one download. I notice that I don't have to restore purchases when I download it now.