Originally posted by: golem
If there is a difference then they are not the same, the terms are multually exclusive. Multiple episodes can link together to be an expansion, but If the eposides are not popular then they can be stopped and you don't have the whole story arc. This is not the case with an expansion since it contains the whole story arc.
So no they are not the same.
Also, name one expansion ever, that cost 19.95 msrp that only contained 5 hours of gameplay? Not because you became bored of the game, but because that was all there was to it?
Until an expansion that comes out in episodes stops in mid production, thats not a valid argument. As of now, its the same thing, just broken down in segments.
There are LOTS of expansions that have had only 5 hours of gameplay. I got more than 5 hours in the first run, and even more going back looking for secrets and skeet shooting. And lots of them cost $30 or more. There are lots of games that cost $40 that have 8 hours or so of gameplay. Tomb Raider Legend is a new example of that.