GG Aleste II (GGアレスタII), released as Power Strike II in Europe, is a shoot-'em-up for the Sega Game Gear in Compile's Aleste series and the sequel to GG Aleste.
Earth is protected by a set of armored defensive satellites. An unknown object has attached itself to the largest of these satellites, named Algo and similar in size to the Moon, and taken control of it. Pilot Alice Waizen, cousin of Ellinor Waizen, is testing the prototype GG Aleste Model II "Lance Bird" ship when she is alerted to this threat and flies off to stop it.
Gameplay
The game is a vertically scrolling shooter. The player controls Alice piloting the Lance Bird, which is moved in any direction with the D-Pad. The Lance Bird has a standard weapon that is fired with , which can be held down for continuous fire. The standard weapon can be upgraded by collecting Power Chips. It can also be augmented by a special weapon by collecting special weapon power-ups. Special weapons are automatically fired simultaneously with the main weapon. The special weapons can be upgraded, up to four levels, by collecting their own special Power Chips. The Lance Bird also has a stock of smart bombs, called G Strikes, which can be deployed with to attack everything on screen. Additional G Strikes can be acquired by collecting a certain number of Power Chips.
The Lance Bird has a Round Field Generator that shields it from one hit. It is activated by collecting enough Power Chips. The Lance Bird is destroyed if it takes damage from an enemy without the Round Field Generator active, costing the player a life. The ship respawns after a moment, and the player's weapons are downgraded a level after losing a life. The game ends if the player runs out of lives, but the player has unlimited continues. The player gains extra lives at certain point thresholds.
There are four selectable difficulty levels.
Weapons
The special weapon is chosen at the beginning of the game and can be changed by collecting item pick-ups.
Neo Napalm Gun
Launches volleys of bombs that travel a short distance and then detonate. Upgrading it increases the number of bombs and the size of the explosions.
Hammer Hawk
Shoots homing missiles. Upgrading it increases the number of missiles, up to eight.
Delta Form
Surrounds the Lance Bird with a drone that orbit the ship and protect it from damage. Upgrading it increases the number of drones, up to three.
Rising Masher
Fires laser beams that pierce through enemies. Upgrading it increases the number of beams, up to four.
Items
The Lance Bird is temporarily invincible after collecting an item.
Power Chip Carrier
Attack to release Power Chips.
Power Chip
Upgrades the attack speed and power of the standard weapon. Collecting Power Chips also activates the Round Field Generator and gives the player additional G Strikes.
Special Weapon Power Chip
Upgrades the special weapon, up to four levels.
Special Weapon Carrier
Attack to release a special weapon item.
Neo Napalm Gun
Equips the special weapon Neo Napalm Gun.
Hammer Hawk
Equips the special weapon Hammer Hawk.
Delta Form
Equips the special weapon Delta Form.
Rising Masher
Equips the special weapon Rising Masher.
1-Up
Gives the player an extra life.
Rounds
Space Plant
Ground Base
Bionic City
Ancient Ruins
Cyber Road
Inter Algo
Bonus Stages
Bonus stages
Bonus areas are played after Rounds 2 and 5. They are played from a first-person, 3D perspective. Enemies fly toward the player. Holding while moving the targeting reticle over enemies highlights them, and releasing fires at the highlighted targets. Each bonus stage has 20 enemies, and the player is given bonus points at the end of the stage for the amount of enemies successfully hit.