Halley Wars

n/a

US/EU
JP

Halley Wars

System(s): Sega Game Gear

Publisher: Taito (Japan), Sega (US, Europe)

Developer: ITL

Distributor: Ecofilmes (PT), Tec Toy (BR)

Original system(s): Arcade boards

Developer(s) of original games: Taito

Genre: Shooting^[1]^[2]^[3]

Number of players: 1

Release	Date	RRP	Code
JP	1991-06-21^[3]	¥3,8003,800	T-11027
US	1991-10^[4]	$34.9534.95^[5]	2318
EU	1991-12^[6]^[7]		2318
PT	199x
UK	1992-02-03^[8]	£24.9924.99^[9]^[10]	2318
BR	1992-04^[11]		013500

Non-Sega versions
Famicom Disk System

Halley Wars (ハレーウォーズ), known as Space Battle in Brazil, is a shoot-'em-up developed by ITL and published by Taito in Japan, and Sega internationally, for the Sega Game Gear.

This game is a sequel to the arcade game Halley's Comet, which was released in 1986 by Taito. The name is a reference to Halley's Comet, which was last in the inner part of the solar system and visible to the naked eye in 1986.

Story

In the middle of the 21st century, Lord Halley has led numerous assaults against the Earth at the cost of billions of human lives. It is believed that he will strike again soon. As a last ditch effort, the nations of the world have developed a spacecraft to intercept the enemy's attacking forces, break their defenses, and destroy them, securing a future for Earth and its inhabitants.

Gameplay

The game is a vertically scrolling space shooter. The player pilots a spaceship, which can move in all directions with the D-Pad. Enemy forces swarm in and attack the player. The craft is equipped with a destructive beam with infinite ammunition, which is fired with and can be held down for rapid-fire. There are several power-ups that can be found inside asteroids or satellites and collected by the player. The destructive beam can be upgraded six times through upgrade items. It is also possible to obtain explosive pods that shoot their own destructive beams with or detonate to destroy all enemies on the screen (except bosses) with .

If the player's ship is hit by enemy fire or collides with an enemy or an obstacle (such as asteroids or debris), it is destroyed but a new one spawns in place if the player has remaining ships. The player starts the game with two extra ships. If the player loses a ship without any extra ships left, the game ends. The player gets another extra ship every 10,000 points scored.

Additionally, there is a damage meter in the corner of the screen that tracks damage inflicted to the Earth. It increases by 1-3% points when certain enemies get past the player. There are also comets in some stages that increase the damage meter by 7% points if they are not destroyed by the player. If the damage meter reaches 100%, the Earth has been devastated and the game ends regardless of any extra ships the player may have remaining. The damage meter retains its value from stage to stage. However, at the end of each stage, the game reduces the damage meter by 1% point for every 2,000 points scored in the current stage.

Weapons

The player's weapon is upgraded to the next level each time a Weapon Upgrade item is collected.

Starting

Upgrade 1

Upgrade 2

Upgrade 3

Upgrade 4

Upgrade 5

Items

Items are collected by shooting open asteroids or satellites, depending on the stage, then flying over the item.

	Asteroid
	Blast open to release an item.
	Satellite
	Blast open to release an item.
	Weapon Upgrade
	Upgrades the destructive beam, up to five times. The player's weapon is downgraded one level after losing a ship; if the player only has one ship remaining, it is downgraded to the starting weapon.
	Explosive Pod
	Collects an explosive pod that follows the ship. Explosive pods shoot their own destructive beam along with the main ship's primary weapon or can be detonated to destroy all enemies on screen. Explosive pods can also be destroyed by enemies or obstacles. If the player loses a ship while possessing explosive pods, they can be gathered again after a new ship spawns.
	Speed Upgrade
	Upgrades the movement speed of the ship, up to four times.
	Laser Shield
	Provides a protective shield that absorbs damage that would otherwise destroy the ship. Dissipates after a few hits.
	4 Explosive Pods
	Arms the ship with four explosive pods. Each has its own destructive beam or can be detonated.
	Bomb
	Destroys all enemies on screen and neutralizes any enemy fire.