Someone once told me that if I had this, that I'd never play Lost Cities again. Do you think that's true? Is it a replacement? And better?

For me they have nothing in common except that you place cards besides a board.

I own both. While I would say that I personally would prefer to play Blue Moon if it was only one or the other, I would also say that I'd be happy to play either game with a willing opponent.

Within a single gaming session, I might find myself wanting to move on after playing a few rounds of Lost Cities. However, with Blue Moon, if it starts to feel repetitive, I can just swap decks with my opponent and instantly the game feels refreshed. If you can the get a hold of other decks outside the base game, then the combinations of matchups can really keep a session going for a while without feeling too stale.

So I don't believe that Blue Moon is a "replacement" for Lost Cities. I just believe that Blue Moon has more replayability.

Cheers Wagon. That description has given me a pretty firm picture of how MB and LC compare. Appreciated.