Descent Zero 

Not much to see here, yet.  You can fight the green lifter, over and over. 

Controls -- (Num Pad)
  [7] Rotate Primary Weapon    [8] Forward       [9] Rotate Secondary Weapon
  [4] Turn left                                  [6] Turn right
  [1] Slide left               [2] Backward      [3] Slide Right
  
[Space] - Fire Primary