エイリアンエンジン

• Ancient Aliens - If the player has [ZF.01] , [ZF.01] gets three special shots at the end of each magazine instead of one. Alien Engine will also fire [ZF.01] bullets.
• Contrail - If the player has [ワームガン] or [ミュータントアーム] , the engine sprite will change and the flame will turn green, igniting enemies with green fire. Alien Engine also grants flight while held.
• Pilot Wingsman - If the player has [操縦士] , it will fire four rockets at a time.
• Space Best Friend - If the player has [スペースメイト] , [スペースメイト] 's fire rate increases significantly.
• [ヘビーブーツ] removes the recoil of the gun, making it much easier to use.
• Using [ボム弾] with this weapon creates a small area of fire, along with the usual explosion.
• [スキャター弾] will triple the recoil, pushing the player considerably faster.
• With [バックアップガン] , the gun will also fire an invisible flame backwards, though recoil is not affected.
• With [高射砲弾] , the gun will rapidly fire small bullets forwards, allowing it to be used as a ranged weapon.
• With [ブランク弾] , the blank effect will be more common because of the high fire rate, greatly decreasing the chance to get hit.
• With the Contrail synergy, the player may use the Alien Engine as a fast way to get around cover during a fight.

• The tagline "The Dangerzone" refers to being in close proximity to enemies when shooting them with this gun, though it may also be a reference to the song by Kenny Loggins , famously used in the film Top Gun . The film features fighter jets with afterburners, which create high thrust and visible flames similar in appearance to this gun.
• The Ancient Aliens synergy may be a reference to the reality television show of the same name , in which theories of extraterrestrial life and technology are explored.
• The Pilot Wingsman synergy is a reference to the Nintendo game Pilotwings .

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