Flame Zapper Kotsujin is a vertical shooter which takes place in outer space. The player controls a fighter spacecraft, advancing through five large levels swarming with enemies (space ships, turrets, tanks, etc.), each culminating with a boss battle. The spacecraft is armed with primary and secondary weapons (fired simultaneously), as well as powerful bomb attacks. Each of these comes in three varieties distinguished by color: red, yellow, and purple. The red group of weapons focuses on spraying fire in different directions; the yellow group contains powerful weapons without covering much of the screen; the purple group is composed of homing lasers and missiles. Power-ups usually stay on screen for a while, changing their color properties.
Players must grab their weapons and descend into several labyrinthine floors, full of monsters and hazards, in this 2D FPS. Each level has a mix of baddies and collectibles, plus damaging tiles and/or conveyor belts to complicate movement. You start on a safe floor with other NPCs roaming around; later stages delve into horror, cyberpunk, and fleshy aesthetics. Maze 999 uses the developer's own raycasting engine, rendering the world a la Wolfenstein 3D.
The game introduces the Shrine Maiden Reimu Hakurei, who frantically attempts to persuade a bouncing Yin-Yang Orb to hit various on-screen targets, "cards" and "bosses" alike. Reimu can knock and maneuver the Yin-Yang orb around by whacking it with her gohei, slide-tackling it, and firing shots at it. Enemies will be trying to hinder your progress by firing at you, but you can cancel out their shots with your own, or even deflect them by swinging your gohei. Only the Yin-Yang orb can damage the enemies, however, so simply firing your shots at enemies will have no effect. As a last resort, Reimu can use a "bomb", once per life, to hit all cards on the screen. There is no guarantee that any given card will be hit, and will often fail to damage a boss.
The game consists of several stages of increasing difficulty, with a boss fight occurring every five stages. To complete a stage, the player should clear all cards or defeat the boss. Reimu will lose a life whenever she is hit by an enemy projectile or the yin-yang orb
Innocent Tour is a combination of Strategy/RPG where you choose one of three characters, and the computer controls the two you don't choose. You battle against enemies both CPU controlled and monsters wandering the board.
Kurayami (meaning "darkness") is a visual novel concentrating on dialogue and decision-making within the confined setting of a broken elevator and developing relationship between the hero and the young woman. Depending on the player's choices, their relationship will evolve in different ways, leading to different endings.
The game contains scenes with nudity and sexual situations.
Battle Queen is all about fights between beautiful young women. In the beginning of the game the player is given the option to choose one of the three available fighters. Each one has an introduction story. Sayaka witnesses the murder of her father, a circus acrobat, by a witch known as Lavender; her story begins with a fight against her. Mai's and Mercedes' stories are one and the same; they are fighting for dominance in modern-day Japan, and fight each other in the first round of their stories.
Despite looking like a fighting game, Battle Queen is strategy-, not action-oriented. The fights are turn-based. The player can choose between different moves, including four kinds of attack, jump, defend, special attacks, etc. Special attacks can only be executed after performing a sufficient amount of other moves.
Each move is displayed as an anime-style image. The girls lose parts of their clothes when being hit. Defeating the opponent results in a sex scene.
In the miraculous World of Demons, there lived a vampiric count. One day, standing near the statue of the Goddess of Time, the count thought with sadness of everyone's mortal fate; at this moment the God of Death appeared, telling the count he has a visitor in his castle. The visitor turns out to be a succubus named Karuru, who suggests that the count trains two young female demons, Tiris and Emalis, and sends them to the other worlds...
A group of friends unknowingly perform an occult ritual that traps them in an otherworldly elementary school. Here, the vengeful spirits of young children threaten their lives and their sanity, and the only hope of survival is to uncover the chilling details behind the murders of those trapped before them...
Metajo is a tactical role-playing game. The game consists of a series of large-scale battles, with cutscenes and dialogues advancing the story. The player controls a group of meta-women, navigating them over top-down battle area. The main characters are controlled by the players, while "nameless" units follow AI routines. Individual battles are displayed on separate screens, and are calculated according to the attributes of the participants. Leveling up occurs after having accumulated a sufficient amount of experience points.