Crisis Force[a] is a 1991 vertically scrolling shooting game released by Konami in Japan for the Family Computer.

The main feature of the game system is the player's ability to transform its ship in one of three different forms, each with its unique attack method.

[4] The main feature of Crisis Force is the player's ability to alter the form of their ship and change its attack method.

During an archaeological trip on a deserted island 17 years ago, the couple discovered an Aurawing, an aircraft built by the ancient Mu civilization.

The siblings board on their respective Aurawing ships, each possessing a mystical power, as they fly off to a continent shrouded in dark clouds.

[5] The late 1980s and early 1990s was the peak of popularity for shooting game genre, and Crisis Force was released around the same time as titles like Gunhed, Seirei Senshi Spriggan, Soldier Blade, and Axelay.

[9] The game's music was composed by Ken-ichi Matsubara, a former member of the Konami Kukeiha Club who worked on Castlevania II: Simon's Quest and Contra Force.

[12][13] Public response was also positive; Japanese readers of Family Computer Magazine voted to give the title a 20.3 out of 30 score, indicating a popular following among the Famicom userbase.

[3] Retro Gamer's John Szczepaniak praised the game's use of parallax scrolling, lush visuals, soundtrack, weapons system and fast-pacing.