Added 3 synthesized sound effects using the Web Audio API (no external files needed):

- **Conversion pop** — unique pitch per faction (Trump=high, Iran=mid, Israel=highest), a quick rising sine tone on each collision
- **Victory fanfare** — ascending 4-note square wave jingle (C5→E5→G5→C6) when a faction wins
- **Restart whoosh** — rising sawtooth sweep when hitting "Play Again"

Sounds are throttled so rapid conversions don't overwhelm the audio.

**Next Ideas:**
1. **Background music** — Add a looping lo-fi beat or chiptune track that intensifies as entities get eliminated
2. **Crowd roar** — Play an escalating crowd cheer as the dominant faction approaches total victory

**Ready to level up your game? Pick one and let's build it!**