Unity WebGL Game - 2D Platformer

Brief Instructions

Note: This game uses a fixed resolution and is best experienced in a fully expanded desktop browser window.
Mobile support is not guaranteed.
If loading appears slow, try using Open in a new tab for better performance.

Click the Start button on the Welcome page to begin the game.

Controls

• Left / Right Arrow Keys — Move horizontally
• Space — Jump
• Double Space — Double Jump
• If you get tripped and fall on the ground, use Double Jump to get up.
  (It may require more than one attempt depending on where and how you fall.)

Navigation

• Reset (top-left corner): Return to the Welcome page
• Previous (top-right corner): Restart the current level from the beginning

Enjoy your exploration!

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Dev Log (Rubric Friendly)

【Title】

Stumble Jump

【Game Flow】

• Welcome
  ↓ Start Button
• Level 1
  ↓ Exit Object
• Level 2
  ↓ Exit Object
• Level 3
  ├─ YOU WON!
  └─ Reset Button → Go Back to Welcome page

2D Character Movement

1. Run (Horizontal Movement)
   Move left or right using the Left / Right Arrow keys.

2. Jump (Vertical Jump)
   A physics-based vertical jump triggered by pressing Space once.

3. Double Jump (Mid-air Recovery and Mobility)
   Triggered by pressing Space twice.

   • Only available once per airborne state.
   • The player must return to the ground to regain the ability.
   • Double Jump is also used as a recovery action after falling.

4. Rotate and Fall (Physics-based Failure State)
   When the player hits uneven edges or comes to a sudden stop at high velocity, the character may rotate due to physics and fall.

   • During this state, horizontal movement is locked.
   • The player can recover by performing a Double Jump, which resets the rotation and restores control.

【Camera】

✔ Camera Follow
A camera-follow system keeps the player and nearby action within the frame at all times during gameplay.

【Non-player Objects with Distinct Behaviors】

1. Trampoline — Ejector
   When the player lands on it from above, the trampoline launches the player high into the air, enabling access to elevated terrain beyond normal jump reach.

   • Side collisions do not trigger the effect.
   • Can be activated multiple times if conditions are met.

2. Trophy-shaped Exit — Level Transition Trigger
   Appears at the end of each level.
   When the player collides with it, the game transitions to the next level.

3. Apple — Temporary Power-Up
   On contact, the player temporarily becomes larger and gains increased movement velocity, allowing for higher or longer jumps.

   • The effect lasts a few seconds.
   • The apple disappears after being collected, accompanied by an animation.

4. End-Game Checkpoint — Victory Trigger
   When the player reaches this object, a “YOU WON!” message appears and floats upward.
   A flag animation is triggered to visually mark game completion.

5. Spikes - Death and Respawn When the player falls into a pit of spikes, they die and respawn at the nearest respawn point.

6. Triggered Moving Platform — Conditional Transport Mechanism The platform activates when the player is upright and remains on top for a short duration.

   • Once triggered, it moves horizontally toward a predefined target position.
   • While the player is standing on the platform, their horizontal position is locked relative to the platform, ensuring they are carried smoothly without slipping or falling.

【Reset Buttons】

• Reset (Global Reset)
  Returns the player to the welcome page, restarting the game from the beginning without quitting the application.

• Previous (Local Reset)
  Restarts the current level from its beginning.
  This is particularly useful in Level 3 when a power-up (apple) is collected but not used effectively to reach the next floating platform.