How to report a bug in Diablo III

Realm doesn't show up on realm list.

Troubleshooting steps for Diablo II (2000) crash errors

Troubleshooting steps for Diablo II (2000) performance issues

How to submit feedback for particular matchups or units for StarCraft II

Information on how to submit suggestions for Heroes of the Storm

Troubleshooting steps for resolving lock ups in Diablo III.

Troubleshooting the Diablo II (2000) installer.

「Warcraft III」および「Warcraft III: Reforged」のバグを報告する方法

Diablo III Supported Video Cards