Rating issues
This game features implied violence to human characters during space ship battles. In turn-based attacks, small ships hit each other with beams and explode after several blows.
There are also some still images in the game which imply violence, for instance: an image of a man facedown in a pool of blood, signifying the choice to launch an assassination mission, or a man in heavy armour tied up, having failed his espionage mission and awaiting execution.
Other issues
The game features online playing capability which may involve real-time interaction with other players.