2K Definitive Strategy Collection Two of the most highly acclaimed PC strategy games of all times are now available in one collection. From Firaxis, Game Informer's #1 Developer in 2012. XCOM: Enemy Unknown, "A singular achievement that every gamer deserves to experience." - Game Informer (9.5 out of 10) Civilization V, "One of the best strategy franchises" - CNN.com XCOM EU Platforms: Windows 7, Windows Vista Civ V Platforms: Windows 7, Windows Vista SP2, Windows XP SP3