meant as an homage to Richthofen, and retains his original (modified) aircraft, a Fokker Dr.I. In It's Always Sunny in Philadelphia, Charlie Kelly has a recurring dream about a German man named "Hans Wormhat," who flies a biplane and shoots at Charlie as he runs across a field. The gang misinterpret Charlie's dream journal entry about "worm hat," and present him with birthday gifts that interpret the concept of a worm hat. Season 6, episode 10 :"Charlie Kelly: King of the Rats" Video game references There have been a number of World War I flight simulators involving Manfred von Richthofen. They include Hunt for the Red Baron, written and published by Small Rockets, Knights of the Sky by Microprose, and Red Baron by Dynamix and published by Sierra Entertainment which was followed up by a less successful sequel Red Baron II. The Red Baron is mentioned in Call of Duty 4: Modern Warfare as a codename. Empire Earth has a German campaign in which four missions allow the players to control Manfred von Richthofen. In League of Legends, one of the champions, Corki, had a purchasable skin designated "Red Baron Corki" that is designed to make his aircraft a red World War I biplane. In Left 4 Dead, there is an achievement, "Dead Baron", that can be earned by completing the Dead Air campaign, a campaign set in an airport. A character named Dr. Edward Richtofen appears in the Zombies mode on the games Call of Duty: World at War, Call of Duty: Black Ops, Call of Duty: Black Ops II, Call of Duty: Black Ops III and Call of Duty: Black Ops 4 In the Nintendo DS game Phoenix Wright: Ace Attorney, one of the characters is named Manfred von Karma. Like the Red Baron, he is known for having a perfect career. He also receives his comeuppance from a single bullet. Red Baron 3D World War I Combat Flight Simulator. Sky Kid, an arcade video game by Namco depicts the fanciful air journey of the "Red Baron" and the "Blue Max". Titles for the Atari system in the 1980s, and in 2006 by Namco for PlayStation 2, PSP, and Xbox game systems have also been released. The Sony PlayStation 2 game, Sly 3: Honor Among Thieves, features a character named "The Black Baron", a flying ace who has never lost a dogfight. In Call of Duty: Black Ops