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

Rise of the Tomb Raider: 20 Year Celebration includes the base game and Season Pass featuring all-new content. Explore Croft Manor in the new “Blood Ties” story, then defend it against a zombie invasion in “Lara’s Nightmare”. Survive extreme conditions with a friend in the new onlin...