Imho :
MP1 created a new and unique genre, the FPA. The game was very immersive and you had this organic feeling when wandering on Tallon IV, reinforced by the ability to scan every litle flower. I remember scanning every inch of wall with the Xray visor to find these samn missile expansion pack !
MP2 got beyond that and walked on the path of the dark and light world we had in Zelda : A link to the past. I think it was a rehearsal of the first opus, somehow i found it a bit harder and the atmospher was less organic but more oppressive, with the ing popping everywhere.
MP3 had a better story and background than the two others imho. I found it less hard than the others, mainly because of the controls that were perfect and unmatched as now.
I can't tell which one I prefered though.







