I was interviewed with Syfe sometime back. There were total 3 rounds

1. LLD
2. HLD
3. Project Discussion + HLD

1. LLD - Multiplayer Ludo Game
Design the core components of a turn-based multiplayer board game system where:

1. Players move tokens around a path on the board
2. Game outcomes are influenced by both chance (dice rolls) and player decisions
3. Multiple games can run concurrently on the platform
4. The system needs to handle 2-4 players per game
5. Players may disconnect and reconnect during gameplay

Expectations:

1. Define the key entities and their relationships
2. Design the core services and their responsibilities
3. Explain how game state will be managed and persisted
4. Detail the API contracts for critical game operations
5. Address how concurrent games will be handled
6. Explain your approach to handling player disconnections
7. Describe how game events would be implemented
8. Consider scalability aspects of your design
9. Discuss how your solution could be extended for future features

2. HLD - News aggregator (Google News)

3. Project Discussion + HLD - Discussed past project and the HLD of that project. + Design a high-scale notification system where millions of notification can be going at fix intervals