G1 is, for me too, better than G2. But in addition with the Addon, both Games are equal.
Things like the Gig of InExtremo (The Band in the second Chapter), are just great.
And the atmosphere, in the different Camps (later in the Game the travelling will be simpler), are very close, and easy to belive.
Just walk through the Camps, or the World, can bring fun.