The universe is mainly grounded in our reality, with references being made to events and locations such as the Iraq War and the September 11 attacks. As well, the mythology of the Horizon universe contains fictional concepts, such as the F-3 Shinden II fighter aircraft.
The "real world" has minor links to the original Strangereal world— the most notable relation is the CFA-44 Nosferatu, which became a fighter aircraft produced by the Soviet Union in the 1970s. Ace Combat Infinity shares elements of both continuities, such as the F-3 Shinden II and Stonehenge, now named "Stonehenge Type-3" and the P-1112 Aigaion, now named "Moby Dick". The new universe was initially suspected of taking place within the Assault Horizon continuity, the end of which was confirmed by the "Ulysses Disaster" trailer.