h3wog.exe is a Heroes III
belonging to Heroes of Might and Magic® III: In the Wake of Gods
from The 3DO Company
Non-system processes like h3wog.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.