Coop?

[Nokturnal]

...how many RPG games in the last 20 years had multiplayer coop?. Could you tell me 10?

I hate to be "that guy" but...

Diablo 3
WoW
Borderlands
Mount & Blade
Neverwinter Nights 2
Dark Souls
Mass Effect 3
Sacred 2
Icewind Dale II
Dungeon Siege
Dawn of Magic (1C game)

There's 11, and only one was a MMO, and I'm also leaving out the countless Japanese made games which come with co-op/MP on various platforms as standard.
I also didn't say Diablo 1, 2, 3 or list the other titles in certain series.
To put it simply - While you may be right that there aren't countless games with (good) co-op the fact of the matter is quite a few games have co-op these days and a lot of the time the game suffers as a result - Funds and time are diverted from the story, AI or other more important content so they can put functioning co-op into the game.

Personally I would rather they focus solely on SP and deliver a solid unique title. Perhaps if the game is a success future titles could include a co-op function, or they could go down the route of adding it to the game through DLC if possible.

But I would have to agree with the other 2, Single Player first and foremost.

Just my 2 cents.