add "Don't Fall Off" game

[redwoodsteve]

Your checklist for this pull request

Author name

Author: redwoodsteve

About your game

What is your game about?

Trying to get to the end of multiple levels, while using strategy, with multiple types of obstacles

How do you play your game?

WASD to move
IJKL to move blue boxes

Code

Check off the items that are true.

• [✅] The game was made using the Sprig editor.
• [ ✅] The game is placed in the in the /games directory.
• [ ✅] The code is significantly different from all other games in the Sprig gallery (except for games labeled "demo").
• [✅ ] The game runs without errors.
• [ ✅] The name of the file/game contains only alphanumeric characters, -s, or _s.
• [✅ ] The game name is not the same as the others from gallery
• [✅ ] The game has metadata at the top of the file in the following format:

  /*
  @title:
  @author:
  @description:
  @tags: []
  @addedOn: 2025-MM-DD
  */
  

Image (If an image is used)

• The image is in the /games/img directory.
• The name of the image matches the name of your file.

Thanks for your PR!

[whatwareweb]

Metadata looks good, a reviewer will take a look at your game soon!

[whatwareweb]

Very cool game! Love this idea!! Could you add a couple more levels?

[redwoodsteve]

working on it!