Zero Mission! Come on! Not saying it's the best, but it should be in the list. Love that one.
Anywho, it's a tough choice, but I'm probably going with Prime. I was hesitant about the style at first, but it was integrated so well, and was really more of a First Person Adventure game. I honestly didn't really play first person games much before this, but it helped ease me into the genre, once I saw how much immersion and potential there can be.








