README excerpt
# PharoSandGame
A colorful falling sand simulation built in Pharo Smalltalk.
## Quick Start
### Prerequisites
- Pharo Smalltalk environment (Pharo 12.0 or later recommended)
### Installation
1. Load the package files into your Pharo image
2. In a Pharo Playground, execute:
```smalltalk
PSGWindow new openInWorld
```
### Controls
- **Mouse Click & Drag**: Spawn colorful sand grains
- **Spacebar**: Flip the entire simulation vertically
- **Left and Right arrow**: Rotate the box (counter-)clockwise.
- **Close Window**: Stops the simulation automatically