Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great game!

I got BioShock from the Steam service last year shortly after release and played it through 3 times. Twice on a 5 yr old WinXp machine and once on a new Vista quad core machine. Zero problems with either. Its not a perfect game, but for me to replay a game, it had to be fun and a bit different each time. (Well, the story is the same each time, but you have many(!) ways to do the combat>) Its a bit on the easy side even with the patch which allows you to disable the super easy continue feature. I've heard people in general have had less problems with the Steam version, but that's just anecdotal. If you have any doubts, just buy it from somewhere that will let you return it if it doesn't work.