https://youtube.com/playlist?list=PLF6lFlLzb6CSuf4g8ZR1VRq-TAgC6AQWD
- Multiplay setting.
- Change Color with RPC server.
- Spawn&Despawn Object with server.
- [SyncVar] health.
- Broadcast cubePosition, and the cube is moved into the position by Client.
- Broadcast chat(now error).