is a 3D action-adventure game

Action-adventure game

An action-adventure game is a video game that combines elements of the adventure game genre with various action game elements. It is perhaps the broadest and most diverse genre in gaming, and can include many games which might better be categorized under narrow genres...

 / rail shooter developed by Illusion Soft

Illusion Soft

is a company from Yokohama, Japan famous for developing 3D eroge such as the Biko series, Battle Raper, Des Blood series, Artificial Girl and Sexy Beach....

 for the PC. As with Illusion's other games, it contains explicit sexual content - in this game as still images, brief pre-rendered cut scenes and limited 3D interactive sequences as part of the plot progression between the levels.

Characters

The player controls several different characters over the course of the game, the majority of them female. The character to be used is determined at the start of each level, where the player usually gets a choice between two of them. Character selection affects the action mode, where some have weapons capable of automatic fire or with better ammo capacity, etc.

Gameplay

Most of the game is spent in 3rd person perspective, with the player viewing the character from behind. In this mode, the character runs around the level trying to find the exit. Usually this entails finding and using various objects, flipping switches, or solving puzzles. Sometimes timing is also necessary to navigate obstacles.

At certain points, frequently after an important task has been completed, the game switches to 1st person action mode. Following a pre set route, the player uses the mouse to target and shoot enemies as they appear, trying to take them out before they have time to hurt the character. Most of the enemies are humans with guns, though some levels also feature various animals that charge the character. If the character takes too much damage and runs out of health, the game ends.

During the action sequences, various power ups appear to help the character if he/she shoots them. They include first-aid kits (increases health), bullets (increase weapon damage or ammo capacity), and bulletproof vests (reduce damage from enemy fire).

Controls

The game is entirely controlled with the mouse. Moving it controls the camera, while the left button runs forward and the right walks backwards. Moving into certain objects or areas can cause the character to do additional actions like jumping or activating switches.

During the action sequences, the mouse becomes a crosshair

Crosshair

A reticle is a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight, a microscope, or the screen of an oscilloscope. The word reticle comes from the Latin "reticulum," meaning "net." Today, engraved lines or embedded fibers may be replaced by a...

to aim at enemies, firing bullets with the left button and reloading with the right.