There's a game called "Apples to Apples" It's a family favorite and can play up to about 4-15. I brings more laughs than any other that I know of. Good stuff.
However, if I'm running our Underdark campaign, the game ends when the eldest gelfling goes to bed, and then we usually crack out RISK 2210 and play a session of that before calling it a night. Occasionally, we go on to play Vampire instead.
Many of our sessions run until 1:00 or 2:00a.m., at which point we all go home and crash. The sessions which end at a reasonable hour (for married folks with kids) are followed by movies and/or perusing of new gaming books, minis and the like.
OOOOHHHHHH!!! VAMPIRE!!! My older bro got some of those books. Whats it like? I have been thinking of becoming a storyteller in that and get some of the other guys into it. Is it worh it?
I clean up most of the mess left behind, say goodnight to the players who have the courtesy to leave and go home (cuz it's very late) and sometimes rudely shut the door in the face of the one guy who insists on staying behind to prattle on about the Buffy-Angel-Babylon 5-Veronica Mars-Dr. Who-Comic Books topics about which I have no interest and he never seems to grasp that. Ever. Politely saying "I've never watched any of those shows or read any of those comics" has no effect on him. He'll stand there and recount in painful detail every minute of whatever episode he's excited about. I have and will continue to shut the door in his face until he gets a clue.
Then I go to bed because I have to get up for church the next day.
Hmmm. Sounds like me kinda. On somedays I can't really help chating for hours with my DM aboute "Friends". But its a bit better than that. At least we both know what we're talking about.