Since Call of Duty: Modern Warfare released last month, the popular first-person shooter has gotten several post-launch patches, with the most recent one being on Wednesday, as the patch fixed a few issues, and added new maps. As of this writing, all of the post-launch add-ons, including the new maps, are free to install.\r\n\r\nAnother thing that was added, or, more specifically, re-added, is Trials, which is a mode that was originally supposed to be included in Call of Duty: Modern Warfare at launch. But, the mode was removed after several players reported a bug which was preventing them from gaining double XP.\r\n\r\nBut, in the latest update, Infinity Ward fixed the aforementioned double XP bug and re-added Trials to Modern Warfare.\r\n\r\nTo begin a Trial in Call of Duty: Modern Warfare, players will need a ticket, which can be earned once you make it through the Officer Ranks. If you're already in the Officer Ranks, you'll receive your tickets via the most recent update.\r\n\r\nOnce you earn a ticket, you'll be given three chances at a Trial, where your performance will be graded, with the highest grade being three stars and the lowest grade being zero stars. Also, the XP you earn from the mode will be determined by your final grade.\r\n<ul>\r\n \t<li>Zero Stars = Zero XP<\/li>\r\n \t<li>One Star = 5,000 XP<\/li>\r\n \t<li>Two Stars = 7,500 XP<\/li>\r\n \t<li>Three Stars = 10,000 XP<\/li>\r\n<\/ul>\r\nThe Trials will rotate, so players will have several opportunities at gaining extra XP.\r\n\r\nhttps:\/\/www.youtube.com\/watch?v=JAZdqPX7UAA\r\n\r\nInfinity Ward also just added a new map to Call of Duty: Modern Warfare, called Shoot House, which has been pretty well-received. The map, which is a small military training facility, has been described as being very reminiscent of classic Call of Duty maps such as Nuketown and Rust.\r\n\r\nBefore the release of Modern Warfare, publisher Activision promised that the game will receive more post-launch content than any other game in franchise history. Moreover, it looks like all of the post-launch content, except for cosmetic items that'll be tied into the Battle Pass, will be free to download.\r\n\r\nIt's also been reported by famed Call of Duty leaker The Gaming Revolution that Infinity Ward is working on a Battle Royale mode for Modern Warfare, which will be added to the game at the end of January 2020. Also, TGR said that it'll be free to download.\r\n\r\nCall of Duty: Modern Warfare is available now for the Xbox One, PC, and PlayStation 4.