I have to admit, despite not being a fan of the first person genre, I love Doom. There is something about the exploits of a lonely space marine single-handedly taking on the forces of hell that draws me in and refuses to let go. Still, as enjoyable as Doom and Doom II were, these games generally don't deliver on the challenge front for a seasoned player. While some may consider that a drawback, it was a non-existent problem to me since challenge isn't the most important thing I look for in a game. However, for those that do, they can easily up the ante with Final Doom.