Bringing NPCs into it makes it really interesting. You could imagine an NPC lying to the player in such a way that incautious players might lose game items tha

Bringing NPCs into it makes it really interesting. You could imagine an NPC lying to the player in such a way that incautious players might lose game items that are worth real world money. That NPC, in a large MMO, could scam large numbers of people out of a large amount of value. Is that wrong? Is it part of the game? Obviously there would be something wrong if you sold people your digital tokens and then took them away from players - you agreed to give them digital tokens and then took them away. But if an in-game character is making false representations as part of the game, that seems different.