I'm not a laptop gamer (except for casual games) and my laptop is about 3 years old now anyway.
Maybe someone who is playing adventure and action/adventure games on a current model laptop can tell you what they're using.
Otherwise, the important thing to look at is the video card -- make sure it has discrete video memory and that the graphics are reasonably fast. Both Nvidia and ATI make great cards, but they also make slow cards that aren't any good for gaming (but are good for battery life) so you have to check the model.