Le question: Why Crash n'Burn is gone from app strore?
We have got no message that it has been removed - I can also still see it live.
Do you have any more information?
[EDIT] It seems the app needs to be updated to run on iOS 11 as well, Sorry for the inconvenience.
We're currently in the progress of updating older apps - so we shall tackle this one as soon as possible as well.