Crimzon Clover (クリムゾンクローバー) is a vertically scrolling dōjin bullet hell game developed by Yotsubane and released at the 79th Comiket. Its name is a reference to the crimson clover, a species of clover native to Europe. Originally released for Windows on January 11, 2011 in Japan, a NESiCAxLive arcade version was released on April 25, 2013. An updated Windows version, entitled Crimzon Clover: World Ignition was released worldwide on June 6, 2014 via Steam, on December 3, 2014 via GOG.com.