The predecessor Xcom: Enemy Unkown was excellent, Enemy Within is even better. It has the story and missions of its predecessor, but was extended by a hostile power, more Upgades and missions. There are now genetic and cybernetic upgrades and human opponents who are just as good as Xcom equipped. In the middle of the game now is an attack on the Xcom Stützpunt takes place, which is a really tough nut to crack. The game runs smoothly in the HDX 7, only for very large maps jerky esordendlich. The graphics and sound are great!