Game Design Idea 1

Core Concept

A short 3D sci-fi shooter inspired by DOOM™ (1993) and HALF-LIFE® 1. 

You play as a lone security officer trapped in a quarantined Earth facility, fighting through labs and corridors to reach the surface elevator before the reactor melts down. 

Settings and Tone

Location: Outpost 7, an underground research bunker hidden beneath a manufacturing site. 

Mood: Cold, industrial, and claustrophobic – the hum of machinery, red warning lights, and something growling in the dark. 

Theme: Undead Horror, invasion, biomechanical take-over 

Inspirations: DOOM™ (1993), DOOM™ 3, HALF-LIFE® 1, DEAD SPACE®

Gameplay Loop

1. Navigate through semi-open world 3D environments

2. Shoot hostiles and manage very limited ammo and health

3. Find objective points (keycards or power switches) to unlock new sectors or portions of the map

4. Trigger a scripted event (e.g. power surge, doors unlocking or locking, etc.)

5. Move onto next level

Enemies 

• Crawlers

  • Runs towards the player and uses a melee attack

  • Cannon Fodder

• Drones

  • Flying enemies that fire an energy bolt

  • Invasive

• Infected Guards

  • A melee or ranged enemy

  • Acts similarly to a human

• Reactor Beast

  • Final Boss

  • Has a melee and shockwave attack

Weapons

• Pistol

  • Starting weapon

  • Has infinite but weak ammo

• Shotgun

  • High-burst, short-range weapon

• Rifle

  • Mid-to-Long Range Weapon

  • Used for Crowd Control

• Plasma Bolter

  • Powerful Energy Weapon

  • Uses a special ammo type that is extremely rare

Campaign

• Quarantine

  • Tutorial Level

  • Main Objectives: Find the Pistol, Kill Enemies, and Open the Gate

• Laboratory

  • Theme: Exploration 

  • Main Objectives: Restore Power to the Facility, Kills Enemies, Open the next Sector

• Reactor Meltdown

  • Theme: Puzzles

  • Main Objectives: Disable three cooling units for the reactor

• Outpost 7

  • Theme: Final Battle

  • Objectives: Defeat the Reactor Beast, Reach the Elevator and Escape the Facility

Attribution Statements

DOOM is a trademark of ZeniMax Media Inc. its affiliates or its respective owners, registered or used in many jurisdictions worldwide. HALF-LIFE is a trademark of Valve Corporation its affiliates or its respective owners, registered or used in many jurisdictions worldwide. DEAD SPACE is a trademark of ELECTRONIC ARTS INC. its affiliates or its respective owners, registered or used in many jurisdictions worldwide. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and/or names or their products and are the property of their respective owners.  All company, product and service names used are for identification purposes only. Use of these names, logos, and brands does not imply endorsement. We disclaim any interest in the marks of others.