Sanity stat in any D&D

I've looked for YEARS for a way to do this, I think Crypts and Things Remastered is THE way to go with this. Simple and Elegant. I could spoil it here but you peeps need to support D101 games, they are doing AWESOME stuff(although I am basing this solely on Remastered). C&T Sanity system I think will work well in actual play, we shall see.......