''Warning Forever'' is a BulletHell game developed by Japanese freeware programmer Hikoza T. Ohkubo available for download [[http://www.hikware.com/Prod/index.html#wf here]]. In the game, you play as the pilot of a starfighter tasked with defeating an endless series of enemy bosses. The game is notable in that the enemies [[AdaptiveAbility actively adapt to your tactics]]; if you've been focusing on destroying one particular segment, expect that segment to be reinforced. Likewise, if a certain weapon kills you, expect more of that weapon in the next form.

It also inspired the real-time tactical game ''BattleshipsForever'', the BossGame ''VideoGame/{{Fraxy}}'' and the Xbox Live Indie Games title ''InfinityDanger''.

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!!This game provides examples of:

* AdaptiveAbility
* AttackItsWeakPoint: You can actually just attack the middle section of the boss until it blows up, instantly defeating it. However, destroying its parts also damages the boss, making it easier to beat. Likewise, the same occurs when destroying an entire "arm".
** Of course, given the nature of the game, if you cut straight to the weak point too many times the boss gets wise and gives that section more and more health.
* BeamSpam
* BossGame
* BossSubtitles - Of course!(If you want the subtitles in English, you'll need version 1.07)
* BossWarningSiren: The game does this despite being a BossOnlyGame, also giving you its name and a brief chart on its weaponry.
* BulletHell
* CognizantLimbs - The different sections of the bosses are all individually destructible.
* CollisionDamage: Oh yes. Gets real bad when the boss evolves into something HUGE.
* DangerouslyGenreSavvy: the Boss-generation system is very intelligent and will tailor every successive enemy ship's design and weapons payload to counter your playing style.
* DeathInAllDirections - Including:
** BeamSpam - Laser
** MacrossMissileMassacre - Pod
** MoreDakka - Vulcan and Needle
** RammingAlwaysWorks: "Force". This isn't exactly a weapon, but allows the boss to propel towards your character, and if the boss is too large you may not be able to avoid getting killed.
** ShotgunsAreJustBetter - Smash
** SpamAttack - Yes, melee. The enemy's CognizantLimbs may track your movement and try to smash your ship.
** SpreadShot - Cannon
* DeflectorShields: in higher evolutions the boss can surround segments in a glowing field that makes the segment indestructible (although this may also may be a kind of power armor rather than a shield).
* DynamicDifficulty
* EndlessGame: In theory, anyway. Eventually the enemy ship will get so big you'll die multiple times just from having it come on screen, let alone fire, which is basically game over.
* EvolvingWeapon: The boss' weapons level up over time, even faster if it managed to beat you with that weapon.
** Cannon: Adds more shots to the spread.
** Laser: Laser is fired more often.
** Pod: Missiles home in on you for a longer period of time.
** Smash: Adds more shots to the attack.
** Needle and Vulcan: Adds more shots to the attack.
* FrickinLaserBeams
* NamesToRunAwayFromReallyFast - The early ships have simple names like "The Wider" or "The Attacker", but as it evolves, you end up with "The Berserker", "The Armageddon", or the "[[OverlyLongName Giga-Beamed Hammerhead Hell]]"
* PainfullySlowProjectile - But as the game goes on, there's an ''awful lot'' of 'em.
* RammingAlwaysWorks - The bosses try this quite a lot, especially if the forward weapons are destroyed. When some of the later bosses fill most of the screen, it can be impossible to avoid.
* ShootEmUp
* SpreadShot: Bosses have a regular variety (Cannon), while your ship has an aim-able Spray Burst.
* SubsystemDamage: Bosses are made up of multiple parts. If the link between a group of parts and the central core is cut, ''all'' parts that are no longer linked are destroyed.
* TimedMission - One mode of gameplay gives you a timer to beat. If you destroy the boss fast enough, you can gain time for the next level.
* UpToEleven- Just how outrageous can the ships get? No, more than that.
* VideoGameLives - Another mode of gameplay gives you three lives, with the opportunity to gain more as you destroy parts.
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