Chaos Break

Progress through the game is made by defeating the enemies, which in this case are alien parasitic lifeforms, mutated staff members and the laboratory's robotic security drones, collect level-clearance pass cards and data which are CD discs. Looting the corpses and lockers for health, ammo and key items to progress through the facility and with a in-game 24 hour clock that affect some of the doors' access window.

An element of survival horror is introduced at the computer terminals, where the player can save their game and read the E-Mails that explain some of the back-story of those who worked at the civilian research facility before the outbreak.^[1]

• Official website (in Japanese)