Formation Armed F
is a 1988 vertically scrolling shooter video game developed and published by Nichibutsu for arcades. It was initially only released in Japan, with a PC Engine port released in 1990 by Pack-In-Video.
Hamster Corporation acquired the rights to the game alongside Nichibutsu's intellectual property, releasing the game as part of their Arcade Archives series for the PlayStation 4 in 2016 and Nintendo Switch in 2019 as simply Armed F.