How do I activate 1999 mode in Bioshock Infinite? 505 viewsJuly 22, 2013bioshock infinite Horde51 March 28, 2013 0 Comments I read about this before release. How do I unlock it? 1 AnswerActiveVotedNewestOldest 0 Anonymous Posted March 28, 2013 0 Comments You need to be on the menu then press:Up, Up, Down, Down, Left, Right, Left, Right, Esc, Enter You must be logged in to answer questions or comment Register or LoginYou can also easily login/register using the following: Twitter Disqus Steam Twitch.tv Related:No Man’s Sky System RequirementsFallout 76 Easy Fat Man Location GuideHow to Increase the FIFA 17 demo time and morePC Game Release Date List 2018 – 2019Evolve Stage 2 System RequirementsCan you help other gamers by anwering questions? Read all the latest additions.