Hi, Hanima!
I think you're right, everything is about reaction in this tests and brain as well!
About the NATS games, they are ok, with the cards game I can't go past tthe level with 5cards, that starts to be difficult to me; the other is ok, I managed close to 4000.
But never mind, everything in the test will be new, never heard or played, so indeed is all about us!
I'm going on 3rd August - GOOD LUCK TO ANYONE!!!