I have finished a quest in an MMOPRG, but don't know which NPC to speak to to get the reward.
I have tried everything I can think of to no avail. This is blocking me in a quest line. Is it on topic to ask about the NPC here?
I can't see a single reason why a question like this would be off-topic. It is an in-game problem, which requires an in-game solution. It does not matter if the game is an MMORPG or a single player match three game.