The layer of complexity added by the full six degrees of freedom makes it one of the most interesting FPS. The maps architecture complexity is increased accordingly which allows realizing the full potential of the movment mechanics. Thus, many attacking strategies are viable options, ranging from a simple straight line frontal rush, to silently squeezing through space and sneaking behind the opponent, including every possible direction in between. Navigating around the floating debris and obstacles in space is a unique feeling that this game provides masterfully.
Although not many people play it online anymore, there still is a small core of regular players, enough to have a lot of fun. UPDATE: This is unfortunately not true anymore. The game is no longer played online on a regular basis.