This package can only access. Anyone who has the Kassiker "UFO - Enemy Unknown" or the like "UFO" series has played or is simply a friend of strategic and tactical games, can find fun for several dozen hours. In addition to the quite refreshing scenario of a UFO invasion and the consequent defensive struggle of all nations of the earth, which will be held in demanding tactical, turn-based battles, you will also like in an economic Sim demanded as a player here. It is to expand its base makes sense to invest the collected resources (in terms of money and alien materials) in equipment to do research and to maintain his soldiers, equip and leveling. It contained the addon offers more of everything: more aliens, more weapons, more missions (including base defense.), A new group in addition to the Aliens (EXALT), new troop types, genetic engineering, new room types, etc. There are also several levels of difficulty, which are suitable for any requirement. Especially the Ironman mode in which there is only one (automatically) are stored Score is something for pain resistant strategists!
All in all, next to CIV the best game from Firaxis.
Accessing, including at home and sink into the struggle against the invaders - just right for the holiday period ;-)