Wii U users around the world who play who are into the sandbox video game created by Markus Persson will have their services affected as Minecraft: Wii U Edition will be down for network maintenance tomorrow.
All network services for Wii U users will be affected from 5:30 PM to 7:00 PM Pacific time / 8:30 PM to 10:00 PM Eastern time. The maintenance will also affect users in Japan (from 9:30 AM to 11:00 AM local time), UK (from 1:30 AM to 3:00 AM local time), and the rest of Europe.
Users will also have tomorrow “certain network services” affected related to online play, rankings, etc., between tomorrow at 9:00 PM and 4:00 AM Pacific time on Tuesday. Currently, the same network services are not available (between 9:00 PM and 1:00 AM Pacific time).
[Sources]: Nintendo: Network Maintenance Information / Operational Status – US / Japan / Great Britain.