The first three titles in the series have been published on the Sony PlayStation (also known as Air Combat Ace Combat in Japan, and Ace Combat 2 Ace Combat 3: Electrosphere). Three titles were released on the PlayStation 2 (Ace Combat 04: Shattered Skies Ace Combat 5: Squadron Leader and Ace Combat Zero: The Belkan War). Two titles were released on the PlayStation Portable: Ace Combat X: Skies of Deception and Ace Combat: Joint Assault. A title was released on Xbox 360: Ace Combat 6: Fires of Liberation. Ace Combat Xi: Skies of Incursion was released on the Apple iOS in 2009. Ace Combat: Assault Horizon was released for the PlayStation 3, Xbox 360 and Microsoft Windows, making it the only multiplatform title in the series. Ace Combat: Assault Horizon Legacy was released for the Nintendo 3DS. In 2013, they revealed Ace Combat Infinity, the first title-free-to-play in the series, which was published in 2014 in the exclusive PlayStation 3. The December 5, 2015, the next major installment of the series, Ace Combat 7, was announced for the PlayStation 4.
With the exception of Ace Combat: Joint Assault Ace Combat: Assault Horizon, Infinity and Ace Combat (all together in the real world), the franchise takes place in a world similar to Earth nicknamed Strangereal with geography and country different. The planet is also in the same solar system as the Earth in real life, with the same sun, moon, and apparently constellations; a particular constellation Crux, plays a major role in the plot of Ace Combat X: Skies of Deception. The only geographical similarities between Strangereal and real life on Earth is that covers Antarctica South Pole of the planet, a health archipelago of New Zealand is close to him, and there is a harp shaped country in the North side seems to be a part of Northern Canada. Strangereal also contains scattered and / or deformed the Earth emerged as a distorted Mediterranean near the equator, and Svalbard and Britain-as in the northern islands. Reading longitude for the planet is based on a 360 system that is oriented west.