Have you ever played a dark hero? Maybe someone who throws dead bodies down stairs to see if they set off any traps? What alignment is he? That might be chaotic, or even evil. What if he squeezes every copper from a mercenary contract? Technically that’s pretty lawful. But then, what if he sets aside [...]
Not all RPGs have an alignment system, but the classic nine alignments are a traditional part of D&D. I think alignment is a crucial aid to role-playing that gives players a quick thumb-sketch of how their character might react in a given situation.