Unnecessary multiplayer in great single player games?

What are your thoughts on great single player games with great stories such as bioshock, dead space, GTA, assassin's creed etc having mutliplayer?

Do you think the success of call of duty have contributed to this?

What makes the developer have such a need to include multiplayer in such great single player titles?

Metroid Prime 2: Echoes and S.T.A.L.K.E.R.: Shadow of Chernobyl are the two biggest examples I can think of.

When it's decent, it can be nice to have it, but a game such as Bioshock definitely should not get points docked off for not having multiplayer.

Coincidentally, I wrote a blog on this subject that elaborates my thoughts a bit more thoroughly.

http://www.gamespot.com/users/DraugenCP/show_blog_entry.php?topic_id=m-100-25869961&tag=all-about%3Bblog1

Bioshock 2, Army of 2 the 40th day (competitive)kris9031998

Some single player games can not handle multiplayer. Single player games that slow down times does not seam to have a good multiplayer

Pause power menu is also another game that can not handle multiplayer

[QUOTE="kris9031998"]Bioshock 2, Army of 2 the 40th day (competitive)kris9031998

Bioshock 2, the multiplayer was bad too.

The Darkness. One of the richest single player experiences of recent years really didn't need a half-baked multiplayer element slapped on to it. Oh, and let's include Condemned 2 while we're at it - that game's combat mechanics did not translate well to online competition.

Riddick Dark Athena have multiplayer and is kind of unnecessary

When its average like RDR i'm fine with. But its just going to be a tack on. I don't want it

The. Darkness.

I'm not going to make a list of games as I have already seen other people mention games in this thread i.e Bioshock, Assassin's Creed, Stalker that come to my mind, but I will say this co-op over MP in nearly all cases...in my book at least.

The. Darkness.

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