I've created **Factory Optimizer** - a comprehensive factory production line puzzle game with all the features you requested!

## Key Features:

**Core Mechanics:**
- **Grid-based factory floor** (30x20) with machine placement
- **5 machine types**: Resource Input, Processor, Assembler, Advanced Processor, Output Depot
- **Conveyor belt system** with visual resource transport
- **Real-time production simulation** with bottleneck identification via status lights

**Gameplay:**
- **3 modes**: Place machines, Connect belts, Delete
- **Resource flow**: Raw materials → Processed → Final products
- **Status indicators**: Green (running), Yellow (waiting for input), Grey (idle)
- **Progress bars** on machines show processing state
- **Inventory tracking** for each machine

**Optimization:**
- **Efficiency metric**: % of machines actively running
- **Production rate**: Products per second tracking
- **Money management**: Buy machines, get 50% refund on deletion

**Level Progression:**
1. **Tutorial**: Basic production chain (10 products)
2. **Efficiency Challenge**: 70% efficiency + 25 products
3. **Speed Run**: 2 products/second + 50 products
4. **Master Factory**: 80% efficiency + 3/s + 100 products

**Controls:**
- **Click** to place machines/connect belts
- **Mouse wheel/pinch** to zoom
- **Middle-click/Ctrl+drag** to pan
- **Touch support** with pinch-to-zoom

**Visual Polish:**
- Industrial color scheme (metallic greys, conveyor browns)
- Machine status lights (green/yellow/red)
- Animated resource movement on belts
- Progress indicators

**Audio:**
- Machine hum sounds
- Conveyor belt movement
- Placement clicks
- Victory fanfare

The game file is ready at: `/public/factory-optimizer.html`