I agree with xXProphecyXx, it depends on the game. I love Halo and without the multi-player the game just is not the same. Same for titles like Gears, L4D (obviously) and others.
When it comes to other action based titles like Resident Evil, Dead Space, or RPG titles like LO, or Mass Effect, I could really care less if they have multi-player at all. Nintendo does a good job of making titles that are enjoyable regardless if on-line features are a part of it or not, considering the majority do not support it.







