Biggest drop in sales in a game series?

[tak13]

I have to say that I hate comparisons that include wii and ds,because it's like apples and oranges(the reason why is self-evident) and of course not because it doesn't fits my boat as a malignant person would say...I'm very satisfied with the fact that is outpacing Mario kart double dash,and that it seems to be capable of surpassing super mario kart/mario kart 64!Comparison are usually made with things that have some similarities and not when they are completely different...
The title isn't accurate,it should be:Biggest drop of game,from predecessor to successor!Not biggest drop in a games series,I have said upper why...
Mario kart 8 is the successor of Mario kart wii,and you called it game series...lol Mario kart plain,is a game series.