The Wars series, also known as and is a series of military-themed turn-based strategy video games, usually developed by Intelligent Systems and published by Nintendo. The series debuted in Japan in August of 1988 with the original Famicom Wars, followed by sequels on the Super Famicom and Game Boy. These early installments were released exclusively in Japan, with Advance Wars (2001) being the first to reach the North American and European markets. Advance Wars was released in the United States on September 10, 2001, but put on hold in Japan and Europe due to the September 11 attacks. Although released in Europe in January 2002, neither Game Boy Advance game was released in Japan until the Game Boy Wars Advance 1+2 compilation, which released for the Game Boy Advance on November 25, 2004. The success of Advance Wars in the West is frequently credited as a driving force for Nintendo bringing another Intelligent Systems franchise, Fire Emblem, outside of Japan, as both series share a similar tactical gameplay style. In 2005, Advance Wars: Dual Strike was released on the Nintendo DS family of systems, which followed and expanded on the basic format of its predecessors. That same year Battalion Wars, developed by Kuju Entertainment, was released for the GameCube in Japan under the title Totsugeki!! Famicom Wars, where it is considered a spin-off from the main series. Battalion Wars is a 3D action real-time strategy game, as opposed to the turn-based strategy of the main series. An expanded sequel for the Wii, Battalion Wars 2 was released two years later. The last major title in the franchise, Advance Wars: Days of Ruin, was released internationally for the DS in 2008 and notably departed from the series's lighthearted tone. Like the two Game Boy Advance titles preceding it, the game was canceled in Japan following a series of delays until it finally released as a downloadable game in 2013. At E3 2021, over a decade after the release of Days of Ruin, a collection of remakes of both Advance Wars games, titled Advance Wars 1+2: Re-Boot Camp, was announced for the Nintendo Switch, with a planned release date of December 2021. A release date of April 8, 2022 was later announced, however on March 9, 2022 it was announced that due to the 2022 Russian invasion of Ukraine the game was being delayed until further notice. Another release date of April