Planned Release Date: Jul 6, 2026

About This Game

About This Game

Play Time: 30 ~ 60 minutes

Gameplay:
Operation is a zombie horror action game where players must survive inside an operation zone overrun by infected creatures.

Players are deployed into a dangerous area after a mysterious outbreak. Inside the zone, they must fight against zombie attacks, complete mission objectives, and survive with limited resources. Explore dark corridors, abandoned buildings, and restricted operation areas while facing the constant threat of the infected.

Situations that may be too dangerous to handle alone can be overcome through cooperation with other players. Cover your teammates, help allies in danger, and work together to complete the mission.

Zombies can appear at any moment. If players let their guard down, they may quickly become surrounded. Even simple movement through the area can become a tense decision between survival and death.

Background:
After an unknown infection incident occurred, the once-controlled operation zone was completely isolated from the outside world.

At first, the situation was believed to be a simple accident. However, as time passed, the abnormal signs became more serious. Communication was lost, personnel inside the area disappeared, and emergency signals were transmitted only in incomplete fragments.

Reports mentioned violent infected individuals, sealed-off areas, and missing survivors. Eventually, the zone was classified as a high-risk area, and everyone remaining inside was presumed dead.

Now, players enter the sealed zone as members of a new operation team. Their mission is to investigate the cause of the infection, recover the remaining clues, and escape alive.

However, the deeper they move into the operation zone, the more they begin to realize that this incident may not have been just a simple outbreak.

Key Features:

• Tense combat against zombie threats

• Exploration of dark and horror-themed operation areas

• Online co-op gameplay

• Team-based mission objectives

• Survival with limited resources

• The truth behind the infection hidden inside a sealed zone

• A violent and threatening zombie horror atmosphere

Developer’s Note:
Operation was created to deliver the tension of zombie horror and cooperative survival gameplay.

The goal is not only to let players fight zombies, but also to make them feel the pressure of exploring dark spaces, cooperating with teammates, and surviving in a place where danger can appear at any moment.

The game may still have areas that need improvement, but we will continue working on it so that players can feel as if they are truly entering a dangerous operation zone and fighting to survive.

Maru Games hopes to present the fun of zombie horror, survival, and cooperative gameplay through Operation.

Distribution:
If you create videos, screenshots, live streams, or other content related to this game, we would appreciate it if you include the game title, Operation, or the Steam store page link.

This game was developed in a small-scale development environment, so there may be some rough or unfinished parts. If you find any issues while playing or have feedback, your comments will be very helpful for future improvements.

Maru Games is not responsible for any damages caused by the distribution or sharing of videos related to this game.

Mature Content Description

The developers describe the content like this:

This game contains violence, blood, and dark thematic elements. Players may encounter combat scenes, injured characters, dead bodies, and horror-themed situations. There is no explicit sexual content.