.... Because they were called a Diablo Clone. DIablo is a hack'n'slash where you are surrounded constantly by dozens of enemies, and you have to hack'n'slash your way through them. With RPGs like Nox, Septerra Core, Revenant and others, you usually fight 1–3 enemies - this is NOT hack'n'slash! This makes them RPGs that are unfairly labelled.

It's good we can get them on GOG cheap, but it's a shame these quality RPGs were dismissed as Diablo clones!