The world to explore is huge, non linear for the most part. Expect to die many times, the game is challenging and I like it this way. Expect to read too, and I mean read a lot. Geneforge is a well-written story heavy RPG where your choices will matter, with diplomatic situations filled with gray areas (it's not at all your classic good vs evil scenario), tactical turn-based combat, several different ways to play the game (I choosed a solo Agent, but you might as well play a Shaper with an army of creations), I think there are 5 different ways to "win" the game and complete the story.
I did not enjoy the story as much as the first game of this saga because the moral choices and the diplomacy were not as entertaining in my opinion, but they were far from being weak! Probably because of some similarities with Geneforge 1, it lacked the surprise and excitement to discover more about the whole plot. The first few maps were rather boring and linear, so it took me some time to get into the story. However areas turned out to be much more balanced than Geneforge 1 and the hand holding of the first maps didn't last long. At some point I became addicted and put some other games aside in order to see where the Geneforge 2 story was going to bring me.
If you are able to disregard the basic graphical quality when playing a game offering a rich world, deep story and a challenging yet enjoyable gameplay, the Geneforge saga and Spiderweb games in general are meant for you and will give you a great gaming experience, you should not hesitate to give them a try. Otherwise, I cannot recommend these games to you.
My rate: 8/10, I'm looking forward to play Geneforge 3 to 5.