well,
i want to play a HARD game with a friend of mine but im tired of spending time on mmorpgs so please is there any game online or a game with online coop that is HARD to play and fun?

thanks for all!

Any specific genre ?

Payday: The Heist.

"Go"
...kinda. Anyways, as difficult as You and Your friend Are good :-)

or Maybe join gog Weekly Blood Bowl League season 3 When it starts?

Sorry for possibkr advertisement :p

Icewind Dale II co-op over TCP/IP, 6 people all with their own character, Heart of Winter mode.

Killing Floor is nice in short bursts.

Doom with the Brutal doom mod installed... on nightmare.. Try the master levels..

or.. Hell Revealed... or Sunder...

Payday 1 & 2 on the higher difficulties can be really hard. Killing floor can also be very hard on the higher difficulties, but playing it with only two persons is not super fun.

If you can track it down (should not be very hard), then Hidden & Dangerous has an excellent co-op mode, and that game is really challenging.

Or Plutonia

Icewind dale is a great choice. Played it with my bro (more the 2).

H&D1 is still free, right?

Let the fun begin!

Apparently yes. I did not even know that it had ever been free, but here it is