the developer take a huge chance in release a demo for prey which employ most of the game and and it pay off and big time . i enjoy prey because it be not hard or too confusing . fast pace and with the all important objective to reach and this game seem to have it all . graphic wise prey be up to date and i guess it compare well to the like of f. e. a. r and doom 3 and everybody favorite and halfe life 2. but this be where the similarity end apart from the alien weapon you get to mame and kill with . the big feature to my mind be the use of physic in the form of gravity . isaac newton would be astound . wall walk upside down if you please and revert to a spirit state where you can indeed walk thru wall and invisible ( to the human eye only ) structure . i enjoy it thoroughly but not for it shoot and kill aspect but more for it original storyline . i would describe it a area 51 meet doom 3. i guess for me and the true sign of a good game be one that you be look forward to continue on with and maybe play again at a late date . but for my money the obvious reason be that this game have be well develop and probably game test over and over to bring a game that be satisfy and bug free . although my system be of the high end type and a lot of game still fail at some stage and not prey . this be the exception to the rule and i thank the developer for spend the extra time on make it this way . i be look forward to prey 2 .