30 Days

Game Concept

After World War III, the world changed drastically. Nuclear warfare and pollution brought about an unprecedented catastrophe. Temperatures rose to deadly levels. Though the war had ended, its consequences were irreversible. Millions perished. Major cities were reduced to ruins. The air became toxic to most life. The remaining survivors fought each other for survival.

A violent group known as The Night Hunters began raiding refugee convoys—looting, killing, and spreading fear. In desperation, the remaining refugees fled toward one last hope... The Bunker.

Mission Statement

The player takes on the role of Maya, a survivor who failed to evacuate after a Night Hunters ambush on a refugee convoy. Along with a few other survivors, Maya retreats to an old safehouse.

The player’s mission is to help everyone survive and escape from this devastated place.

Genre

A Post-Apocalyptic Survival game with 2D Side-Scrolling gameplay.

Core Elements:

• Survival

• Resource Management

• Strategic Decision-Making

Game Mechanics

Start of the Day

• The player begins inside the bunker.

• Must allocate resources to restore the bunker, craft items, and prepare for future expeditions.

Daytime

• Due to extreme heat, players cannot leave the bunker during the day.

• Focus shifts to managing supplies, crafting equipment, and constructing survival tools.

Nighttime

• Players can explore the outside world to gather resources.

• Limited time outside due to:

  • Oxygen supply

  • Limited inventory space

• Must decide what essential items to bring back.

• Beware of Night Hunters, who roam at night.

Scavenging Locations

• Players choose destinations for resource gathering.

• Each area has a different danger level.

  • High danger zones increase chances of encountering Night Hunters.

• Players must choose between retreating or sneaking further to scavenge.

Scavenging and Survival

• Buildings have high pollution levels, reducing breathing time.

  • Failure to escape in time causes rapid HP loss.

• A status indicator (bottom-left UI) shows the player’s current condition.

• Inventory is limited: 1 item = 1 slot.

Control

Movement
AD: Used to control the character’s movement direction

• A: Move left

• D: Move right

Looting System
E: Used to search various objects in order to collect resources, such as cabinets, boxes

Inventory System
Tab: Allows the player to view the items that have been collected

Stealth System
Ctrl: Allows the player to enter stealth mode to sneak past enemies

Interaction with Objects
Mouse click: The player can click to interact or use items