"Thriller" is a pretty broad category anyway, and probably isn't a good descriptor for an RPG. It was one I plucked out of the air to describe espionage/crime/special ops RPGs without any supernatural/super-science bent.
Because the pacing of RPGs is so different from films and literature, due to the free-form, collaborative narrative in an RPG (you hope), can they ever be overwhelmingly thrilling?
Doubtful imo. They're made up of a medley of "moments", of action, suspense, comedy, awe, romance, etc. So to give an RPG a genre, it has to be largely setting orientated, I think.
Maybe I won't use Modern Thriller next time,

I'll call it Espionage/Crime instead.
Btw I agree with Mina about the Bourne films. Action thrillers. I'd go so far as to say very few dyed in the wool action films are made anymore, that aren't straight-to-DVD at least.