So every time I stop by different casual sites I notice that a lot of the games are quite simillar. Now I'm not out to say that all casual games are the same, just that some portals are offering slightly different versions of the same game. My question is, how can these developers pitch thier games to casual game publishers when a game with the same concept may already exist in that same space? And what about the game player's themselves? I mean do they notice that some games are clones? How do they decide which ones to buy?