I brought my new PC specificly to play two games. One being Crysis and the other being this. I don't regret spending a peny, this game is superb in every way. The graphics are stunning and the missions are incredibly varied and enjoyable, one minute your soaring in a glider and the next your chasing unidentified flying objects over Area 51. I would say you need the acceleration pack without doubt, i don't see the point of owning FSX without it. Acceleration features some of the best missions and of course includes that incredible F-18 which is unlike any other aircraft in the game, trying to land that baby on a carrier is alot of fun. As is trying to master the red bull air race, this game just goes on and on, its just a shame the team that created this masterpiece are no more.
Unfortunately the system requirements are huge! If you arent sure whether your pc will run the game or not then i recommend you download the free demo first. It is worth noting that this game still looks incredible with low graphic settings set up so if youve been holding off thinking it won't run on your PC, you may be pleasently suprised?
If you have the specs, you need this game.