Yu-Gi-Oh! Master Duel’s servers have been pretty reliable over the last three years. Some players, though, might be running into issues that leave them questioning if the game is down.
How to check if Yu-Gi-Oh! Master Duel’s servers are down
News of any expected maintenance can be found on the left side of the main menu. Screenshot by Dot Esports
In my experience, the Yu-Gi-Oh! Master Duel servers are normally fully functional outside of regularly scheduled maintenance periods, which usually happen once or twice a month. When a maintenance period is approaching, Konami will put a notification on the left side of the main menu. You can also access any news on upcoming maintenance through the Maintenance tab after clicking on the envelope icon at the top of the main menu.