For me a little lan ( less that 8 people ) it is the most fun to play co op games. The competitive level between friends is too extreme and almost every game you play will see 1 player dominate and leave several people frustrated.
Good games i can vouch for being fun has to be
-The
Serious sam titles was the most fun ive had in co-op in ages,
-Another game ( you need xp for this or have the luck of 10 billion leave clovers to get it working on vista or 7 ) is
Freelancer Old but brilliant space flying game. DON'T STEAL LOOT OR YOU WILL MOER EACH OTHER!!!
-
4 players and down.
- Rainbow 6 titles
- swat 4 ( give it a try and thank me later )
- BORDERLANDS
- Daiblo 2 Sacred Gold/2 or Dungeon siege
2 player co - op
Gears of war
Resident evil 5 ( one has to be the chick don't emasculate your friend be the man and take the girl )
If you have to play vs each other.
Good old command and conquer generals Zero hour.
get cards with duplicate numbers 1 1 2 2 3 3 4 4
Draw in a hat and draw team mates
that way it is random and fun
team up choose random starting points for super chaos and off you go.