Umm yeah, NWN / NWN2 were both highly successful, as in they made their producers money and went on for many years with multiple expansions and player created content. The player created content part was amazing, that you could build your own world for you and your friends to run an adventure was cool, or that you could download and play other people's creations.
The campaign's released with the game were just to show off the engine, review sites completely missed that part and figured that was ~all~ there was to it. Lately I've stopped reading game reviews, too much is based on the 15 to 60 min of time the reviewer puts into actually playing the game, all in a rush to get the review out right at launch.