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by Snarboo - November 18th, 2011

Bio-Hazard Batte / Crying: Aseimei Sensou (クライング 亜生命戦争) - Genesis, Wii Virtual Console, Windows (1992)

American Genesis Cover

Japanese Mega Drive Cover

Bio-Hazard Battle, or Crying: Aseimei Sensou (or "Sub-Life Battle", roughly) in Japan, is an unusual game even for Sega. Published in 1992 for the Sega Genesis/Mega Drive, it's one of Sega's few horizontal shmups besides Fantasy Zone. It also has the distinction of being built entirely around biological themes. Rather than the Giger-esque visuals of R-Type or the gore piles of most other organic shooters, Bio-Hazard Battle draws its inspiration from nature. Just about everything in the game looks like some twisted or corrupted version of an existing animal, even the player ships, which are the sort of creepy crawlies reserved for the final stages in other shmups. The game's music is also very unusual, favoring deep, throbbing bass lines and heavy use of percussive instruments. It's these strong design elements that separate Bio-Hazard Battle from its peers in the genre, although it doesn't hurt that the base game is enjoyable too.

The story is as follows: A massive biological war has broken out across the surface of the planet Avaron, rendering it inhospitable for human life. The few remaining survivors aboard the space station OP Odysseus are put into cyrosleep, waiting until the day it may be habitable again. It isn't until hundreds of years have passed that they are finally awoken. As the pilot of one of four bioships, a mixture of machine and living being, you are tasked with finding a new home for the survivors, as well as clearing out any biological contamination that you happen to come across. It's not particularly deep, but it's a good enough excuse to blow away giant mutant insects.

In terms of mechanics, Bio-Hazard Battle is a fairly average shmup. The game offers the usual assortment of options, as well as a two-player mode. There are five difficulties to choose from, which mostly affect the frequency and speed of bullets, as well as making enemy spawns more aggressive. The two-player mode is unusual in that the player ships cannot fire through each other, requiring a modicum of teamwork to progress. In another unusual move, running into obstacles doesn't kill the player, although they will die if they spawn in a wall or get crushed against the screen.

The player has two default weapons: a standard pea shooter, and a charge shot called the Plasma Wall. In addition, the player ship is always accompanied by an orbitting option, or Power Star, that fires whatever sub-weapon is currently equipped. This satellite weapon moves in the opposite direction the player does, and shields the player from enemy fire. It also damages enemies on contact, which can be used to the player's advantage.

There are seven sub-weapons in total, spread over four colors: green, yellow, red and blue. Each sub-weapon can be upgraded a total of three times by collecting the same color multiple times in a row. The power level will remain the same if the player switches to a new weapon, and one power level is lost upon death. Each ship has four different sub-weapons, one for each color, and all ships have at least one weapon in common with another. The default sub-weapon is the green implosion pod, which acts like a spread gun.

There are 4 ships to choose from, each with a different load out:

Right from the very beginning, Bio-Hazard Battle goes out of its way to leave a lasting impression on the player. The first stage begins with the player's ship being launched into the atmosphere of Avaron, where it quickly descends to swelling fanfare. The pacing is pitch perfect, with waves of enemies that almost seem to move to the beat of the music. Each of the following seven stages introduces something new, be it an enemy or environmental gimmick, as well as ending in a boss fight against a massive monstrosity. Most of the stages take place in natural locations such as jungles, caves and even the ocean, but a few see the player flying through the ruins of former cities and abandoned research facilities. There's even the requisite battleship stage, where the player has to take out a remnant bioweapon piece by piece. The game is chock-full of graphical flourishes, too, with numerous weapon effects and explosions to ogle as you progress.

The visuals are hit or miss at times, with chunky sprites, flat backgrounds and the occassional garish palette, but thankfully, the bestiary more than makes up for any graphical shortcomings. The screen is often filled with literal swarms of nasties, occassionally causing the game to slow to a crawl as the processor tries to keep up with the action. The game also features some of the most well animated multi-segmented beasts ever seen in a shooter, with a new variant appearing in every stage. The most fantastic enemies are the bosses, however, particularly the bony, Giger-esque snake that is featured on the box art, or the giant shrimp that shields itself with muck dripping from the walls of a cave. The enemies can be hard to look at sometimes, with many of them recalling the sort of horrors found crawling around rotting logs, or swimming in the ocean's deepest reaches.

Tying the package together is the bass heavy soundtrack. The first stage theme is probably the best in the game, with each subsequent song either remixing it or adding a twist to it. The music syncs up perfectly with the on screen action, with enemies often appearing as if on cue. The soundtrack has a booming, thunderous quality to it that works well with the organic visuals. A few may find the soundtrack to be grating, however, especially given the limitations of the Genesis' sound chip. The boss theme is particularly egregious, consisting mostly of a blaring klaxon while gong is struck in the background.

Bio-Hazard Battle's first four stages aren't particularly difficult, but the difficulty quickly ramps up by the fifth. Bullets start to fill the screen, and enemy swarms become more numerous. The player's hitbox is fairly large, so destroying enemies before they appear is more important than trying to dodge their shots. Losing a single power level in the later stages can be disastrous, leading to countless deaths as the player struggles to defeat stronger foes. Boss fights can also take forever to complete should the player be reduced to the lowest weapon level.

There are a few regional differences between the two versions. Besides the different box art and title screen, Crying lacks an autofire option. This makes it incredibly difficult to play, as it was clearly not designed to be played without autofire. Crying also boots the player back to the Sega logo after accessing the options screen, rather than returning to the main menu like in Bio-Hazard Battle. Otherwise, the two versions are identical.

While not one of the system's better shooters compared to the likes of Thunder Force, Gleylancer and Eliminate Down, very few games can match Bio-Hazard Battle in terms of atmosphere or visuals. There's a real sense of foreboding as the player slowly works their way back to the true source of the bio war, with the final stage being one of the most memorable ever seen in a shmup. The game also has obvious environmental themes without being heavy handed about it. The creatures you fight are satisfying to blow up, even if they are a stark reminder of the destruction man is capable of. It's an unusual gem, and one that is well worth playing.

Bio-Hazard Battle was re-released on the Wii's Virtual Console service in 2007, and on Steam as part of the Sega Classic series in 2010. It also appears on the Sega Genesis Classic Collection Gold Edition compilation for Windows PCs.

Quick Info:

Developer:

Sega

Publisher:

Sega

Genre:

Shoot-'em-Up: Horizontal

Themes:

Player Character: Alien
Post-Apocalypse
Space Combat


Bio-Hazard Battle (Genesis)

Bio-Hazard Battle (Genesis)

Bio-Hazard Battle (Genesis)

Bio-Hazard Battle (Genesis)

Bio-Hazard Battle (Genesis)

Bio-Hazard Battle (Genesis)

Bio-Hazard Battle (Genesis)


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