Shortly after landing on an alien surface, you learn that hundreds of your men have been reduced to just a few. Now you must fight your way through heavily fortified military installations, lower the city\'s defenses and shut down the enemy\'s war machine. Only then will the fate of humanity be known.Minimum RequirementsOS: A 100% Windows XP/Vista-compatible computer systemRecommended RequirementsGenres: Action/Adventure Age Ratings: ESRB: BLOOD AND GORE, MATURE, VIOLENCEPEGI: 16, ViolencePublisher: Bethesda SoftworksDeveloper: ID SoftwareInstructions: 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