Done! I've made the marbles move faster by:
- Doubled gravity from -15 to -30 (game.js:29)
- Increased restitution (bounciness) from 0.2 to 0.4 (game.js:31)
- Increased initial marble velocity from 1 to 4 (game.js:283)

And changed the camera to face the marbles:
- Moved camera from top-down (0, 35, 0) to side view (0, 8, 30) (game.js:19)
- Adjusted lookAt to focus on marble height level (0, 2, 0) (game.js:20)

**Next Ideas:**
1. **Follow Cam** - Make the camera track the main red marble as it moves through the course
2. **Speed Trails** - Add particle effects behind fast-moving marbles for motion blur effect

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