Retro FPS Kit - Complete Template

Playable Demo (Windows) | Documentation | Video Tutorials | Trailer

Retro FPS Kit is a game template inspired by classic first-person shooters like Wolfenstein and Doom.

🔥 Latest Highlights:

• Modified the ammo system: ammo is now a regular inventory item, and weapons draw ammo directly from the inventory when reloading
• Ammo can now be picked up without owning the corresponding weapon
• The weapon ammo counter now shows the total number of rounds across all ammo stacks in the inventory
• Picking up a duplicate weapon now converts its loaded magazine into inventory ammo
• Added an Allow Multiple Stacks toggle to the item configuration (ItemSO ScriptableObject). When enabled, picking up an item whose current stack is full creates a new stack in another available slot instead of blocking the pickup. When disabled, the item cannot be picked up once the stack limit is reached
• The stack counter (e.g. (1/4)) is now displayed from the first pickup. Items with Stack Max set to 0 do not display a stack counte
• Fixed Is Semi Auto option (enabled = one shot per click, holding does not repeat; disabled = continuous fire while the button is held)
• Added a new grenade system
• Added full integration with Unity's Localization Package
• Added language selection in both the Main Menu and In-Game Pause Menu
• Added item tooltips to the inventory
• Completely redesigned Enemy AI system
• Enemies now react to gunshots fired by both the player and other enemies
• Added sound investigation behavior, allowing enemies to search for the source of suspicious noises
• Enemies can now detect and react to player footsteps
• Added a full Stealth gameplay mode
• Enemies are now able to trigger alarms when they detect the player
• Added alarm zones and alarm system support
• Added light zones, making the player more or less visible depending on lighting conditions
• Added a complete Main Menu and Pause Menu system
• Added graphics settings and in-game options menu
• Added a Save & Load Game system
• Expanded the inventory system with support for collectible items such as medkits, keys, and mission items
• Added key-locked doors and access panel systems
• Added support for planting and detonating explosive charges
• Added a mission compass for objective tracking
• Completely redesigned and expanded the Mission Manager system
• Added support for creating custom objective types
• Added objective dependency chains, allowing objectives to appear only after completing previous tasks
• Added optional objectives that do not affect mission completion
• Added a new Stealth-focused demo level
• Added a hit indicator system
• Added Level Transition system
• Improved overall gameplay systems and framework extensibility
• Various optimizations, improvements, and bug fixes
• Added two new melee weapons: a knife and a crowbar
• Added a new enemy character prefab
• Added a ladder climbing system
• Added left and right leaning actions
• Added a crouch action

🔥 🔥 🔥

This package provides everything you need to kickstart and expand your own retro-style FPS project – without writing a single line of code. Both weapons and enemies are represented with fully animated 2D sprites, while enemy characters feature 8-directional animations for authentic retro movement.

Build classic action shooters or stealth-focused missions using a complete framework that includes advanced AI, mission scripting, inventory, save system, menus, dynamic music, and much more. Every major system is configurable directly through the Unity Inspector – no programming required.

🔑 Key Features

🕹 Player System

• Classic FPP movement built with Unity's New Input System: Move, Run, Jump, Crouch, Lean Left / Right
• Health, ammo and stamina management
• On-screen Health and Stamina UI
• Surface-based footstep sounds (concrete, wood, metal, grass)
• Ladder climbing system
• Hit Indicator system
• Grenade system

🔫 Weapons System

• 6 weapons included: Pistol, Assault Rifle, Shotgun, Sniper Rifle, Knife, Crowbar
• Complete animation sets: Equip, Idle, Walk, Run, Fire, Reload, Empty Reload, Aim Idle, Aim Walk, Aim Fire, Hide
• Surface-specific impact effects and sounds
• Bullet trails
• Muzzle flash, smoke and shell ejection particles
• Heat Distortion effect
• Complete weapon audio

💣 Grenade System

• Throwable grenade system for both the player and enemy AI
• Enemies can throw grenades at the player during combat
• Configurable grenade behavior, damage and effects

🎒 Inventory & Items

• Weapon & Item Pickup and Drop System
• Hotbar for quick weapon switching
• Collectible mission items
• Medkits
• Keys
• Custom inventory items

🤖 Advanced Enemy AI

• Multiple AI states: Patrol, Alert, Investigate, Chase, Attack, Crouch Attack, Strafe Left / Right, Melee, Seek Cover, Behind Cover, GoToAlarm, Reload, ThrowGrenade, FleeGrenade
• Enemies investigate suspicious sounds
• Enemies react to player footsteps
• Enemies react to gunshots fired by both the player and other enemies
• Enemies react to grenades thrown by the player
• Enemies can throw grenades at the player during combat
• Dynamic communication through randomized voice lines
• Trigger alarm systems after detecting the player
• Open doors while patrolling or chasing
• Use cover intelligently during combat
• Headshot detection
• Blood effects
• Configurable item drops (weapons, ammo, medkits, keys, mission items, and more)
• 8-directional animated sprites
• Includes 5 enemy characters

🥷 Stealth System

Create stealth gameplay without writing custom code

• Full stealth gameplay support
• Alarm system
• Player Visibility system

🌍 Localization Support

• Full integration with Unity's Localization Package
• Language selection from both the Main Menu and In-Game Pause Menu

🎯 Mission System

Powerful mission framework for building complex objectives

• Eliminate enemies
• Collect items
• Reach locations
• Plant explosive charges
• Activate switches and access panels
• Custom objective types
• Objective dependency chains
• Optional objectives
• Mission compass
• Completely redesigned Mission Manager

🚪 Interactive World

• Key-locked doors
• Access panels
• Explosive Charge Placement & Detonation
• Level Transition System

💾 Save System & UI

• Complete Main Menu
• Pause Menu
• Graphics & Game Settings
• Save & Load Game system

🎵 Dynamic Music System

Adaptive soundtrack that seamlessly switches between ambient and combat music depending on gameplay.

✨ Custom Sprite Shader

Unlike Unity's default sprite shader, this Shader Graph solution allows sprite-based characters and objects to react to dynamic lighting and shadows.

🗺 Demo Content

• Action Demo Scene
• Stealth Demo Scene

📦 What's Included

• Complete Retro FPS Framework
• Advanced Enemy AI System
• Full Stealth System
• Alarm System
• Player Visibility System
• Mission Manager with Custom Objective Support
• Objective Dependency Chains
• Optional Objectives
• Mission Compass
• Inventory & Collectible Item System
• Configurable Enemy Loot System
• Weapon and Item Pickup & Drop System
• Hotbar System
• Grenade System
• Main Menu, Pause Menu
• Graphics & Game Settings
• Save & Load Game System
• Level Transition System
• Explosive Charge Placement & Detonation System
• Key-Locked Doors & Access Panel System
• Ladder Climbing System
• Leaning & Crouching Mechanics
• Hit Indicator System
• Dynamic Music System
• Complete Audio System
• Custom Sprite Shader
• Unity Localization Package Integration
• Language Selection in Main Menu & Pause Menu
• Player Controller with Health & Stamina Systems
• 6 Animated Sprite Weapons
• 5 Enemy Characters with 8-Directional Animations
• Multiple Demo Scenes (Action & Stealth)
• Complete Documentation

🎥 Video Tutorials

👉 https://www.youtube.com/playlist?list=PLCstDtDAYSoY

✨ Whether you want to build a classic retro shooter, a stealth game, or a complete mission-driven FPS, Retro FPS Kit provides a production-ready framework with advanced AI, modern gameplay systems, and a fully configurable architecture that lets you start building immediately.

Note: This package includes third-party content under the Creative Commons CC0 1.0 Universal license. Please refer to the Third-Party Notices.txt file included in the package for more details.