Gaijin Games is working on to fix Wii U runner 2 bug which freezes the system on exiting or powering off."We had never experienced this issue on our devkits, during development, so it seems that this is an issue that only occurs on retail Wii Us," co-founder Gaijin Alex Neuse told."This makes it super gnarly to debug. It might not even be our bug. But we have tried to fix it."