Warning Forever

Warning Forever is a freeware 2D shoot 'em up written by Hikoza T Ohkubo and released under the name of his software house, Hikware.

The premise of the game is to fight a constant stream of bosses. The gameplay is broken into stages; each stage is a single boss battle. To progress to the next stage, the boss must be completely destroyed within the time limit. The game starts with a default time limit of 180 seconds (which can be changed to the maximum of 999 seconds in Options), with 30 seconds being gained for every boss defeated. 20 seconds are lost every time the player is destroyed.

The main gameplay feature is how the bosses change from stage to stage. Based on how you fight a boss, the next boss will adapt itself to defend against your strategies, and prey on your weaknesses. For example, if you destroy the front part of the boss first, it will increase armor on the front. Likewise, if you are killed by a certain kind of weapon, but still defeat the boss, the next boss will probably have more of that weapon.

The player flies a relatively small green ship. There are no power-ups - the player's only weapon is a very rapid-fire revolving cannon which can fire in any direction, and widen or concentrate its projectile spread.

As is common in manic shooters, the area of the player's ship vulnerable to collisions is much smaller than the ship itself. This enables the ship to squeeze through small gaps.

Boss evolution
There is one initial boss, called the Pure Heart. This can evolve into eight intermediate forms:


 * Muramasa
 * Phoenix
 * Asura
 * Berserker
 * Scorpion
 * Hekatoncheir
 * Big Magnum
 * Hammer Head

There are four final evolutions:


 * The Infinity
 * The Apocalypse
 * The Catastrophe
 * The ISE-ONE

The first three final evolutions come after the nine intermediates, but the ISE-ONE is a direct evolution from the Pure Heart.

Boss parameters
Before each battle a chart pops up showing the strengths of the upcoming boss. There are six categories:


 * Front - Indicates forward strength
 * Rear - Indicates rear strength
 * Defense - Indicates defense
 * Core - Indicates strength of the core (the centre piece; destruction of the core destroys a boss)
 * Search - Indicates boss' ability to track down the player
 * Generator - Indicates quantity and speed of enemy gunfire

Weapons

 * Vulcan - Basic machinegun turrets. Stronger generator increases projectile amount.
 * Laser - Laser cannons that shoot pink beams. Stronger generator increases duration of beams.
 * Cannon - Cannons that shoot a spread of blue energy-balls. Stronger generator increases amount of shots per spread.
 * Smash - Turrets that shoot shotgun-style projectiles. Stronger generator increases projectiles fired.
 * Needle - Turrets that fire a stream of thin green bolts.
 * Homing Missile - Homing missile launchers. Stronger generator increases homing capacity.

The bosses can also have thrusters with which they charge at the player; mobile arms; wide spreading and multidirectional vulcan guns; and defensive shielding.

Game modes

 * 180 seconds - The normal, time-limited mode.
 * Three Ships - No time limit. The player begins with three lives, and gains an extra life for every hundred pieces blasted off a boss.
 * Five Minute attack - The player has a time limit of five minutes to get as far as possible.
 * Sudden Death - The player has one life and no time limit.

How to Unlock Specific Transformations

 * Asura - Choose one side of the Pure Heart and destroy both corners on that side. Continue to attack the core until it explodes. Continue with this pattern on subsequent levels, being careful not to destroy anything on the other two corners. Over the next several levels the Pure Heart will evolve into various combinations of Wider, Double Wider, Wing Wider, and eventually Wing Arms. Once this evolution is reached, defeat it any way you choose and it will eventually evolve into Asura.
 * Hekatoncheir
 * ISE-ONE - Start by destroying one whole corner on the Pure Heart. Then, destroy the corner diametrically opposite to the one already demolished. Continue destroying the other two corners in any way, it doesnt matter which ones, but get them both. Now, as the stages progress, continue with the same destruction pattern (the initial choice of corner does not matter, as long as the pattern is adhered to). The boss will evolve from a Pure Heart to an Armor, then to a Tornado, and finally to the ISE-ONE. Once the ISE-ONE has evolved, it can be destroyed in any way and it will remain an ISE-ONE, with variations. If the same destruction pattern is adhered to, it will evolve variants such as Death, Crazy, Excite, and so on. If the boss proves problematic to destroy in its Armor or Tornado forms, one can still blast off parts on corners that are not the immediate target, as boss evolution is affected by whole destroyed corners. The ISE-ONE will appear more quickly if one does not die often, although this increases its defense points.