Stair Fall - Stick Figure Physics Game

Seele01-Flash
By
Stair Fall is a free stick figure physics game where you push characters down stairs to create maximum damage and earn points. Experience hilarious ragdoll physics in this entertaining browser game.

Prompt

MODEL: Seele01-Flash
Please use Three.js to generate a **mobile-first game** with the theme "**Stair Fall 3D**". Please read the following detailed game design requirements first, and then generate the code accordingly: ### 1. Assets & Environment * **Visual Style**: Minimalist "Ragdoll Physics" aesthetic. Use a high-contrast color palette: White or light grey background, dark grey concrete stairs, and a pitch-black 3D Stickman (using cylinders and spheres). * **The Character (Ragdoll)**: Create a physics-based ragdoll rig using primitive shapes (Sphere for head, Capsules/Cylinders for limbs). The joints must be loose enough to flop comedically but stiff enough to hold a vague shape before impact. * **The Environment**: An infinitely generated (or very long) steep staircase. To optimize for mobile, use **InstancedMesh** for the stairs to keep draw calls low. Add a "Start Platform" at the top. * **VFX (Blood & Impact)**: When the ragdoll collides with a stair at high velocity, emit simple red cube particles (simulating low-poly blood) that linger on the stairs for a few seconds before fading. * **Camera**: Implement a smooth follow camera that tracks the ragdoll's torso but keeps a slight distance to show the chaotic tumbling. ### 2. Audio Requirements * **BGM**: No music or very subtle "elevator bossa nova" music to create comedic contrast with the violence. * **SFX**: * **Impacts**: Three tiers of impact sounds based on collision velocity (Light Thud, Heavy Smack, Bone Crack). * **Vocalization**: A synthesized "Oof" or generic scream when the initial push occurs. * **Score Ticking**: A rapid "ding" sound as points accumulate during the fall. ### 3. Gameplay Loop * **Phase 1: The Setup**: The stickman stands on the edge of the stairs. A power gauge (UI) oscillates rapidly from 0% to 100%. * **Phase 2: The Push**: The player taps the screen to lock the power. The stickman is shoved forward and down based on that force value. * **Phase 3: The Fall**: The physics engine (Cannon.js or similar) takes over. The player watches the character tumble. * **Scoring System**: `Score += Collision Impulse * Multiplier`. Head hits are worth 2x points. Rotating in the air adds to a "Style" multiplier. * **Phase 4: The End**: When the ragdoll comes to a complete stop (velocity near 0), show a "Final Score" popup with a "Replay" button. ### 4. Mobile Controls & Interaction * **Orientation**: Portrait mode (vertical) to maximize the view of the staircase depth. * **Control Scheme (One-Tap)**: * **Tap anywhere**: Stops the oscillating power bar and applies the push force immediately. * **UI/UX**: * **Power Bar**: Large, visible bar at the bottom or side of the screen. * **Score Display**: Large, floating text that updates in real-time at the top center. * **Replay Button**: Large hit area (at least 60x60px) centered on screen after the round ends. * **Haptic Feedback**: Trigger `window.navigator.vibrate(50)` on heavy impacts (if supported by the browser) to enhance the "crunch" feel. Do not ask for clarification. Do not request confirmation. Directly execute the generation task based on the given instructions.

Game Introduction

About the Game

Stair Fall is a wildly entertaining stick figure physics game that has captivated players with its simple yet addictive gameplay. With an impressive 4.4/5 rating, this free browser game combines dark humor with realistic physics simulation to create an unforgettable gaming experience.

In Stair Fall, you control the fate of stick figure characters by sending them tumbling down various staircases. The game's advanced physics engine creates realistic and often hilarious ragdoll effects as characters bounce, flip, and crash their way to the bottom.

Core Features

Realistic Physics Simulation

The game features sophisticated physics mechanics that make each fall unique and unpredictable. Watch as stick figures react realistically to impacts, obstacles, and momentum changes during their descent.

Score-Based Gameplay

Your objective is simple yet challenging: create maximum damage to achieve the highest possible score. The more dramatic the fall and the greater the impact, the more points you'll earn.

Multiple Staircase Environments

Explore various staircase designs, each presenting different challenges and opportunities for creative destruction. From simple straight stairs to complex multi-level structures, every level offers new possibilities.

Instant Replay Value

Thanks to the physics-based gameplay, no two falls are exactly alike. Even repeating the same level provides different outcomes, ensuring endless entertainment.

Game Mechanics

Stair Fall operates on a damage-based scoring system where creativity and timing are rewarded. Players must consider factors like:

  • Angle of Push : Different push angles create varying trajectory paths
  • Timing : Perfect timing can maximize impact and chain reactions
  • Environmental Hazards : Use obstacles and level features to amplify damage
  • Physics Interactions : Understanding momentum and collision mechanics leads to higher scores

Operation Guide

The game features intuitive controls that anyone can master:

  • Arrow Keys : Control the direction and force of your push
  • Spacebar : Execute the push action
  • Mouse : Navigate menus and restart levels

Simply position your stick figure at the top of the stairs, aim your push using the arrow keys, and watch the physics take over. Experiment with different angles and forces to discover the most effective techniques.

Why Play Stair Fall?

Perfect Stress Relief

Stair Fall provides an excellent outlet for stress relief through its absurd and harmless virtual destruction. The game's cartoon-like stick figure art style keeps the content light-hearted despite the premise.

Quick Gaming Sessions

Ideal for short breaks, each level can be completed in under a minute, making it perfect for quick entertainment sessions during work breaks or commutes.

Physics Learning

While entertaining, the game also provides an intuitive understanding of physics concepts like gravity, momentum, and collision dynamics.

Universal Appeal

The simple concept and controls make Stair Fall accessible to players of all skill levels, while the physics complexity provides depth for those seeking mastery.

Completely Free

Enjoy unlimited gameplay without any cost, downloads, or subscriptions. Simply open your browser and start playing immediately.

Frequently Asked Questions (FAQ)