1st gen iPad, iOS 5.1.1
Both BS and RS are doing it. Not sure about any other games yet. I have whichever versions came out last; I can't see the numbers, as they're in the section that's crashing.
I thought it was just Diamond Quest that popped up with this problem out of the blue, but apparently not. That game suddenly started crashing at its splash screen after it had been working fine, and I thought it was an isolated issue, but I just found out that BS & RS run fine except when I try to tap Help/FAQ, and they both instantly quit every time.
I've restarted my iPad. I have nothing running in the background. I can't reinstall, it'll eat up all my data, and that stuff's not cheap. :-/