History Main / BossWarningSiren

** 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. In-universe, this is a feature of the Metal Attacker's AI; this is why Jason himself is assigned the title "Blaster Master" by Kane's MA.

* From ''VideoGame/Disgaea2CursedMemories'' onward, whenever a Pirate group is due to arrive in the [[RandomlyGeneratedLevels Item World]], the screen will flash red as a siren plays. ''VideoGame/Disgaea5AllianceOfVengeance'' even has a '''WARNING''' flash up on screen. ''VideoGame/DisgaeaDimension2'' is the only exception, as Pirate Groups tend to appear on the floor at the very beginning of that map.

* In the UsefulNotes/SegaGenesis ''ComicBook/SpiderMan'' video game, Spidey's SpiderSense always goes off just before a Boss villain appears with a quick visual of the usual wavy lines around his head. However, this is also a signal of a prime opportunity to take a picture of the enemy to sell to the Daily Bugle for more webfluid.

* ''VideoGame/RayCrisis'' has "ALERT: GENERATING HUGE ANTIBODY: [boss name]". The UsefulNotes/PlayStation port interrupts the music with an audible siren during the warning screen. A different alert is used when you return to the Self-Field to fight the FinalBoss.

* ''VideoGame/IWannaBeTheGuy'', parodying ''Ikaruga'', provides a klaxon and "WARNING: NO REFUGE" sign when Mecha Birdo is approaching.
* In ''VideoGame/MagicalDoropie'', {{Boss Only Level}}s are herald with a screen saying "ALERT!!" in big letters on a black screen flashing red. The player then appears in the level while the boss makes its entrance. When the boss's entrance is finished, a "Data File" on the boss appears, listing its name, health, strength, speed, damage and special ability. However, in the final stage, none of the final three bosses have any alert screens or data profiles, although the siren is still heard while the final boss is materialising.

* ''VideoGame/{{VVVVVV}}'' has a screen named "The Warning". One conveyor belt tunnel, no spikes, ''eight checkpoints in a row.'' Immediately after this screen comes the path to [[BrutalBonusLevel Doing Things The Hard Way]], a six-screen long gauntlet of spikes traversed both ways.

* In ''VideoGame/RunSaber'', normally an arrow appears at the top of the screen showing you which way to proceed through the stage. However, when a boss is encountered, an ''ALERT!'' icon blinks there instead.
* In several platform games made by Creator/{{Rare}}, such as ''VideoGame/JetForceGemini'' (also an action game), ''VideoGame/DonkeyKong64'' and ''[[VideoGame/BanjoKazooie Banjo-Tooie]]'', among others, a boss is presented through a lengthy cutscene as onminous music plays. The buildup of the battle may be based on either the boss's slow but climactic arrival to the battle arena, or even the ''assembling'' of the boss (as in the case of Mr Patch in ''Banjo-Tooie'' and King Kut Out in [=DK64=]). Notably, for each of the three mentioned games the background music building up the encounter is the same (including for the FinalBoss), whereas in ''VideoGame/ConkersBadFurDay'' and ''VideoGame/StarFoxAdventures'' each boss has its own music presentation.

* ''Videogame/GianaSistersTwistedDreams'': It comes accompanied with BossSubtitles.
* ''VideoGame/BubbleBobble'': Occurs with the battleship Yamato in ''Bubble Symphony'' much like in ''Darius'', and with each boss in ''Bubble Memories''.
* ''VideoGame/{{Catherine}}'': "_____ has appeared. It's the killer. [[TryNotToDie Do not die.]]"
* In the UsefulNotes/SegaGenesis ''ComicBook/SpiderMan'' video game, Spidey's SpiderSense always goes off just before a Boss villain appears with a quick visual of the usual wavy lines around his head. However, this is also a signal of a prime opportunity to take a picture of the enemy to sell to the Daily Bugle for more webfluid.
* In ''VideoGame/DonkeyKongJungleBeat'', after levels before a boss appears, if it is the banana eating minigame and then after clearing that, there will also be a sound to signify a boss is approaching. The Kong bosses give out an EvilLaugh, the hog bosses give out a laugh that sounds like they are LaughingMad, the roc bosses give out a screech, and the tusk bosses give out an mechanical elephant sound. During that sound, the monkeys run off and Donkey Kong turns to face the silhouetted boss.
* In ''VideoGame/TheAngryVideoGameNerdAdventures'', the "Boo! Haunted House" stage parodies ''VideoGame/ANightmareOnElmStreetNES'' with the warning ''BIMMY'S©™ COMING!''.
* 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 player to "BEAT MY BOSS!".
* ''Mega'' ''VideoGame/{{Turrican}}'' has a klaxon ring and a voice shout "EMERGENCY! EMERGENCY!" when encountering a boss, except for [[FinalBoss The Machine]].

* ''VideoGame/EighthMan1991'' throws a "Warning!" screen before each boss stage, with the boss looking menacingly at the player as the red background blinks rapidly. You have two seconds to prepare for battle.

* ''VideoGame/EighthMan'' throws a "Warning!" screen before each boss stage, with the boss looking menacingly at the player as the red background blinks rapidly. You have two seconds to prepare for battle.

--> '''{{Announcer|Chatter}}:''' "This is the final! This is wh--''Wait a second! A new opponent has interrupted the tournament!''"

--> '''Flying Dog:''' This is Flying Dog to Headquarters. Intruder found in the Security Hall. Preparing to attack.

---> ''"I'm detecting a strong demon ahead. Do you want to go on?"'' \\

--->'''WARNING!'''
--->'''WARNING!'''

--> '''[[TheHero Shulk:]]''' Are you sure this is a good idea? \\

---> "WARNING -- [ [[TitleDrop JUDGEMENT SILVERSWORD]] ]"

---> "WARNING -- HERE COMES THE FINAL JUDGE! [ E3 ]"

* "[[VideoGame/DonPachi WARNING: THIS IS NOT SIMILATION. GET READY TO DESTOROY THE ENEMY. TARGET FOR THE WEAK POINTS OF F**KIN' MACHINE. DO YOUR BEST YOU HAVE EVER DONE.]]" ...And in the sequels: "You are approaching the target of attack. The mission starts now! Are you ready?", "Watch out! Watch out!", and "An unidentified battleship/[[FinalBoss unprecedented tremendous force]] is approaching!"

--> WARNING \\
THE AREA TARGET \\
''(boss name)'' \\

-->'''WARNING!'''
-->BOSS CLASS ENEMY / [[MakesJustAsMuchSenseInContext FLYING MAUSOLEUM]] / DRUNKEN MASTER OF DELIRIUM AHEAD!

-->'''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.

* 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 player to "BEAT MY BOSS!".

* All ''VideoGame/{{WarioWare}}'' titles have a sound clip whenever a boss stage is coming up next and will linger on the screen between microgames eight beats longer than normal. There will usually (but not always) be an on-screen message telling you that you're about to encounter the boss. Said sound clip varies from game to game, but that in ''[=WarioWare=]: Smooth Moves'' sounds particularly like a klaxon played to a beat.

* ''VideoGame/ProjectWingman'': Every time an elite squadron or an enemy ace pops out at the end of certain Campaign missions (or at the end of every Conquest map), a loud horn accompanied by the words "CAUTION - SQUADRON NAME" fills the screen when they spawn. Mostly associated with [[TheAce Crimson Squadron]], the game inverts it during the last phase of the FinalBoss [[spoiler:Crimson 1]]. This time, the words "CAUTION - [[PlayerCharacter MONARCH]]" appears, meaning YOU have your own Boss Warning Siren.

* Indie video game [[http://www.konjak.org/ ''Chalk'']] has the word "WARNING" flash on screen and an opera singer singing "oooohaaaahAAAAAH!" for it's boss siren. The last stage includes the siren at the start of its music, which is appropriate since it's a boss rush.

* ''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.]] ''Reign'', the track that plays while [[spoiler:Majima storms the Dojima Family's HQ]], also starts with a siren - except [[spoiler:''you're the boss'']].

* ''VideoGame/ShinMegamiTenseiI'' and ''VideoGame/ShinMegamiTenseiII'' normally avert these--most of the type you're given no advance warning for upcoming bosses. However, if you encounter one of the [[BonusBoss Fiends]], each of which have a 1/256 chance of showing up while their specific requirement is met, the game gives you a warning message, asking you if you want to stand your ground. If you say "yes", the game asks you if you ''really'' want to stand your ground. Say "yes" again and the battle immediately begins. This carries over to ''VideoGame/ShinMegamiTenseiIV'' as well--see below.

** If you encounter a midboss or certain {{Bonus Boss}}es, Burroughs urges you to "be careful."

* ''VideoGame/RayCrisis'': "ALERT: GENERATING HUGE ANTIBODY: [boss name]". The UsefulNotes/PlayStation port interrupts the music with an audible siren during the warning screen. A different alert is used when you return to the Self-Field to fight the FinalBoss.

* ''VideoGame/RayCrisis'': "ALERT: GENERATING HUGE ANTIBODY: [boss name]". A different alert is used when you return to the Self-Field to fight the FinalBoss.