Basically acted as a trigger. So if you pressed harder the game could respond. I only really remember driving games taking advantage of it though, and can't remember the game but remember being super annoyed at some action-rpg-like game where it used it to differentiate between actions but running into issues of it interpreting all of my presses as hard presses.
MBCook|4 months ago
I don’t remember ever playing any other games that used it besides Gran Tourismo 3. I imagine in something like a fighting game it would be too hard to reliably hit the right pressure to get the move you want and it would end up just feeling really frustrating.