X-Com : UFO Defense

In order to activate this game, you will require a third-party 'Steam' account. For full details on how to activate please follow this link: https://support.steampowered.com/kb_article.php?ref=5414-TFBN-1352

You are in control of X-COM: an organization formed by the world's governments to fight the ever-increasing alien menace.

Use of this product requires agreement to the following third party end user license agreement: http://www.take2games.com/eula/