History Main / BossWarningSiren

* ''VideoGame/{{Overload}}'' features a loud siren and a menacing message about an massive incoming threat as the player enters the boss area.

* ''VideoGame/TouhouChireidenSubterraneanAnimism'': Utsuho Reiuji, the [[ILoveNuclearPower nuclear-powered]] [[CorvidTropes Hell raven girl]] (and final boss) of the game, has the distinction of prefixing each of her spell cards with klaxons while the text '☢ Caution !! ☢' flares on-screen.

[[folder:Non Videogame Examples]]

[[folder:Shoot'em Up]]

* ''Mega'' ''[[VideoGame/{{Turrican}}]]'' has a klaxon ring and a voice shout "EMERGENCY! EMERGENCY!" when encountering a boss, except for [[FinalBoss The Machine]].

* ''Blazeon'' starts looping the boss alert sound when enemies are still on the screen. After the last enemies scroll off, the following "Alarm Messages" appear in succession (the second over a SpeedStripes transition):

* Played with in ''VideoGame/AxiomVerge'', where the track used for Uruku, the [[spoiler:hallucination boss]], and the FinalBoss starts with a siren.

* Underwater ShootEmUp section in ''VideoGame/TheWonderful101'', appropriately, has Darius-like warning for the boss of the area.

* ''VideoGame/{{Einhander}}'' gives a warning that is themed into the level. For example, in the first level, after fighting your way through the city, the police decide that they can't take you down, so they follow behind you like a low speed chase, keeping their sirens going while they basically escort you right towards the first boss. Following bosses might have klaxons sounding off to indicate that the boss is powering up and becoming mechanically operational, or have someone over a PA system order for another boss to scramble and prepare for battle.

* ''[[VideoGame/{{Touhou}} Touhou Project]]'': In ''Subterranean Animism'', Utsuho Reiuji, the [[ILoveNuclearPower nuclear-powered]] [[CorvidTropes Hell raven girl]] (and final boss) of the game, has the distinction of prefixing each of her spell cards with klaxons while the text '☢ Caution !! ☢' flares on-screen.

* ''VideoGame/{{Yakuza 0}}'' has the [[BonusBoss Mr. Shakedown]] enemies, who's [[https://www.youtube.com/watch?v=ut9kyP1Bsx4 theme music begins with a warning siren.]]

** [[{{Engrish}} AN AWESOME PRAYER IS CONFLICT WITH US -- KEEP YOUR DIGNITY]]

** Warnings also appear in ''Blaster Master Zero'', with added BossSubtitles. Unlike the NES game, however, the room doesn't darken, and you don't have an opportunity to quickly retreat.

* ''VideoGame/NierAutomata'' has a warning card accompanies by a klaxon whenever a Goliath class machine is detected. These range from machines the size of a house to machines the size of a skyscraper. This siren also plays during important boss fights.

* Perhaps the weirdest boss warning comes from the PS1 game ''Eggs of Steel'', where a cutscene plays before certain bosses showing the game's BigBad dancing and challenging the players to "BEAT MY BOSS!".

* Downplayed in ''VideoGame/{{Terraria}}''. When bosses occur naturally they are accompanied by an onscreen message (such as "You feel an evil presence watching you" for the Eye of Cthulhu, or "You feel a quaking deep underground" for the Destroyer) each boss having a unique message so the player can tell which one is coming. When summoned a message saying "(Boss Name Here) Has Awoken!" accompanied by a common boss monster roar. [[spoiler: In addition to an onscreen message, the screen blurs and darkens and the music fades to silence when the Moon Lord is about to appear.]]

---> '''Ji Han Jae''': As you gentlemen know, red means danger. Therefore I advice to you people, not to step into this warning arena. If you want to go on living, stop here, go back downstairs. Life is precious.

In some video games, before you fight a boss, the screen will start flashing red while the word '''WARNING!''' flashes up on the screen as the stage music fades out or stops abruptly. Sometimes, it could be a visual warning ''or'' an audio warning; it doesn't necessarily have to be both. In any case, this lets the player know that he's about to face off against a more powerful foe.

** The ''VideoGame/MegaMan1'' remake ''VideoGame/MegaManPoweredUp'' also had this, despite not being present in the other games from the classic series.