Just because there's a lot of the games doesn't mean they're necessarily milked.
To me "milked" games are stuff like Dynasty Warriors; they're literally the same game over and over. --- "I don't spend my time posting Nintendo hate topics while letting my 360 and PS3 controllers rumble in my lap."-blazingsonic
I get the feeling many people don't know the definition of "milking" when it comes to videogames.
When a company has a very successful game and decides to re-use the same design in a slightly different skin or with slight variations a number of times in a row, THAT is what's considered milking. Examples of companies milking a series would be the NES Mega Man games by Capcom, Call of Duty by Activision or FIFA/Madden by EA.
Nintendo releasing Super Mario Galaxy for instance is not milking the series, the game features many new concepts and plays different enough from previous 3D Mario games. SMG2 was released to ride on the success of SMG and could be considered an attempt to milk the series. However, SMG2 wasn't really a lazy cash-in so I think it is unfair to call out SMG2 for being part of a milked series. The NSMB series is a different story though and those ARE a good example of Nintendo milking the Mario franchise.
But in the end the most important thing is that the game are fun. I love Mega Man games and I don't care if most games in a series play very much the same, I love more of the same! As long as the industry also works on new concepts and new ideas I see nothing wrong with companies "milking" their established franchises. Many posters on this site seem to be stuck in some sort of black&white thinking and somehow can't understand that videogames industry needs to both innovate AND preserve the past in order to survive. --- m e g a m a n f o r e v e r